If a person wants to know whether it is possible to make contact with a particular spirit in a manner that is certain, then perhaps they should make an attempt to do so, rather than engaging in experience-lacking-intellectual activity.
If we set things up so we can never become certain, then we basically place ourselves within a psychological trap. Doing so reminds me or moral relativism. If we don't allow ourselves to see the difference between right and wrong, we won't do so.
Regarding what makes me certain about making contact with Jesus, first of all, years ago, I had what I refer to as my Night in Heaven experience. I was an atheist at the time. If somebody would've tried to tell me that the afterlife exists I would not had believed he or she. But then I had my experience, and it became crystal clear that the person of Jesus did in fact exist, and that in some way he represented divine reality (his spirit still does). There was nothing stodgy or repressive about this. It wasn't a matter of my engaging in some belief system because my way of understanding was at a deeper and far more certain level than we ordinarily understand. The funny thing is that eventhough I was open to this new way of understanding, I was still able to think in my old atheistic way. Therefore, I was able to compare my old way of understanding with my new way of understanding. I was quite surprised to find what I found out about Jesus and other things.
As significant as this experience was, I forgot about it for years, just as some near death experiencers forget what they experienced for a while. This doesn't mean that my experience lacked validity. When I remembered it was as if the experience happened yesterday. There are reasons for which it was necessary for me to forget it for a number of years.
At some point after I had made contact with my spirit guidance I started to receive hints about Jesus. For example, I did a retrievel one time and at some point the guy I was helping forgot about me and went to where Jesus was. Gold light radiated from Jesus and filled the entire scene I found myself within. When I took part in this retrievel I didn't have prior thoughts of Jesus.
On another occasion I received a three-part message about my awakened kundalini. First I was shown a life-size image of a heavy metal rocker dude. I could see kundalini flowing within him. He said I use my kundalini for evil. Next I was shown a life-size demonic image of myself. Next I was shown the face of Jesus Christ. I figured this series of messages meant that if I'm going to go through the kundalini ascension process I better make certain I do so with Christ consciousness/love in mind because kundalini (the creative aspect of being) can be used in just about anyway. In the above case Jesus' image could've been symbolic, but it also could've been a pointer to him, when later experiences are considered.
I reached a point in my life where I realized that I didn't actually know who Jesus is and what he is all about. I only had knowledge-lacking concepts about him. As I went for a walk one day I sent thoughts towards God and said, "I can't believe in Jesus in the way that some people do simply because a book speaks about him. If I believed in him for such a reason I would be dishonest with myself and with you (God)."
A few days after I stated the above and as I lay in bed one night I was shown a crucifix. I asked, "why" and was shown an armless and headless manikin that was placed on a department store floor. On this manikin was a white fur coat with black polka dots. I understood what this message meant quite quickly. "They killed him (Jesus), they spotted his reputation (the black polka dots on a "white" fur coat), they put him on display (like a manikin in a department store)." Next I experienced myself press the high C note of my piano (non-physically), which is a way of saying Jesus represents the highest consciousness level there is.
This sequence of images appeared in a manner for which it is hard to believe that nothing more than my imagination took place. For one thing, it didn't feel as if my imagination was responsible. Also, the symbolism was probably too clever for it to be the result of my imagination. Rather, because I was humble enough to realize that I didn't know what Jesus is about and because I was open to finding out what was true, I received an answer.
On another occasion I was meditating one night and feeling love, peace and expansiveness. Suddenly the image of Jesus appeared to me. He gave me a couple of messages and left. Because at the time I was trying to figure out what Jesus is about, I find it hard to believe that my spirit guidance would lead me astray by showing me an image that isn't representative of what's true. Because I was feeling love, peace and expansiveness when I had this experience, I doubt that some deceptive being found a way to enter the realm of my consciousness and show me an image of Jesus. The manner in which the exchange took place seemed to be beyond what my imagination could create. I did not have the intent to make contact with Jesus on this occasion.
One evening I read some of Elaine Pagel's book about Jesus. She wrote that the Gospel of Thomas speaks of Jesus as if he was an enlightened man, the Gospels of Mark, Luke and Matthew as if he is the son of God, and the Gospel of John as if he is God himself. Before I went to sleep that night I prayed and asked to have a dream which let me know which gospel is accurate. In the middle of the night I woke up in order to write dream notes. I turned on my night lamp and grabbed my notepad and pen. Before I could write anything I saw a light flash. Before this experience I had seen spirits appear as flashes of light numerous times. But they were significantly smaller and didn't radiate as much energy and light as I saw on this occasion. The presence I experienced felt more real than this physical world. The existence of divinity couldn't be doubted. I forgot about writing my dream notes, put down my notepad and pen, turned off my night lamp and lay on my side. I was overcome by the spirit presence that visited me.
I didn't see an image of Jesus during this experience nor was I told this is who is visiting me, but it "felt" like it was his spirit. Plus, this seemed like a natural response to my prayer. This being worked on my energy for about 15 minutes in a way that was beyond what kundalini had ever done. Ever since, my upper chakras have been more alive, clear and balanced.
I've had other experiences where a spirit with the image of Jesus appeared to me, but I believe it should suffice to say what I've said. It is also important to state that during the same time period I remembered my Night in Heaven experience.
I've read of other people who have made contact with the spirit of Jesus in a way where it seems quite certain that this is what they did. For example, during his NDE David Oakford was led by a guide who introduced him to the spirit of Jesus. Therefore, it wasn't a matter of David erroneously assuming that the light being he met was Jesus. This is what he wrote:
"He talked about Jesus too. He told me Jesus was a master God sent to Earth to teach humans how to act toward each other and find their way back to the path of harmony with each other as well as with Gaia.
--I was told that Jesus is the being that is entrusted by God to ensure that souls evolve. He said that Jesus is of the highest in vibration than any other soul. He said that God holds Jesus in the highest of favor because he was the best example of what humans need to do. I then got to see Jesus. I saw his light. Jesus' light was the purest I have ever seen. There was no need for words. There were only love feelings that I cannot even begin to describe."
Here is the link to David's experience. Does it sound fundamentalist?
http://www.near-death.com/oakford.html Regarding ACIM, I gave the course a good try for a while, despite some hints from my spirit guidance to be careful with it. Then I realized it was having a brainwashing effect on me. So I decided to be humble about the matter and realized that I wasn't able to discriminate it with certainty. So I prayed to God and Christ and asked them if the course comes from Christ. On every occasion I asked I was in some way told "no." Because I felt love, peace, expansiveness and divinity each time I asked this question, it seems reasonable to believe that a being who represents the light responded. This is especially so since my guidance has proven to be trustworthy.
Eventually I reached the point where I allowed myself to read ACIM with discernment, and despite some of the nicey things it says, it does have errors and is misleading. Whoever the words came from, they were delivered in such a clever way where unless a person uses keen discernment, he isn't likely to see how the course is misleading. This is especially so if a person lacks the openness to thoroughly question the course. I have found that some people become so psychologically and emotionally caught up in it that they lack the freedom of mind to question it in a thorough way. They would much rather throw rocks at a person such as myself. I have received several messages that stated that the course has a malevolent source.
Regarding Helen Schuchman, she was very anti-spirituality when she started to receive the words. She didn't want to continue to do so but the spirit who fed her the words forced her to receive them (it wouldn't allow her to sleep until she took notes). Also, William Thetford, a man who worked as a mind control specialist for the CIA, talked her into continuing to take notes. I find it hard to believe that the spirit of Christ would choose a lady with a strong distaste for spirituality to be his messenger. It also seems hard for me to believe that Jesus would select a lady who has a strong association with a CIA mind control specialist.
Helen Schuchman ended up in a dark, angry and depressive state of mind. She referred to ACIM as that damn course. I find it hard to believe that a lady who supposedly received messages from Jesus for years would end up in such a state. Going by my experience such contact has opposite results. My ability to open up to divine love has improved significantly.