Luke 3:21-22 .....and while He was praying, heaven was opened and the Holy Spirit descended on him.....
Matthew 14:23 .....After He had sent the crowds away, He went up into the hills by Himself to pray.....
Mark 6:46 .....After bidding them farewell, He left for the mountain to pray.....
Mark 1:35 .....In the early morning, while it was still dark, Jesus got up, left the house, and went away to a secluded place, and was praying there.....
Matthew 5:1 .....Seeing the crowds, he went onto the mountain. And when He was seated his disciples came to Him.....
Luke 5:15-16 .....But the news of Him kept spreading, and large crowds would gather to hear Him and have their illnesses cured, but He would go off to some deserted place and pray.....
These are just six of a relatively large number of instances where the New Testament talks of Jesus the Nazarene going to pray, or preparing to preach. It would appear that no two sources can ever agree about the exact wording of these quotes but, nonetheless, these passages are often taken to be literal truth.
Quote: "The reference to going up a mountain prior to preaching [see fifth quote, above] is considered by many to be a reference to Moses on Mount Sinai. Lapide feels that the clumsy phrasing implies that this verse is a transliteration from the Hebrew, and that it was an exact replica of a passage describing Moses. Boring notes that the reference to Jesus sitting may be an allusion to Deuteronomy 9:9, where in some translations Moses is described as sitting on Mount Sinai." [Source - Wikipedia, Matthew 5:1]
Of course it is quite possible that the Nazarene did take time out to do a little mountaineering or hill walking, although one doubts whether he was dressed or otherwise prepared for such exercise. There is a much more likely interpretation [in my opinion] of the passages quoted above, and that is that these trips were symbolic, a journey upwards into the higher regions of the mind. There is no doubt that the symbolism of the mountain or hill [and I would add that of an ascending flight of stairs, a ladder, or some other means of ascent] is very powerful and of great value in meditation. Similarly, the imagery associated with deserted or secluded spaces can be used in meditation to effect contact with higher processes of the mind. It is in these states of meditation that heaven opens and that the Holy Spirit can be said to descend. Only in these states can one truly escape the 'illnesses' of the chattering ego.
One does not need to be a religious, to hold a belief in God, to carry out the kind of meditation or spiritual exercise apparently carried out by Jesus, that of mentally climbing a mountain to meet with a 'wise person' in whatever form that image appears. Not only is such a journey greatly uplifting and reinvigorating, but there may also be an added bonus of a gift, perhaps a simple pebble which changes into a precious stone embodying a truth as one descends to everyday consciousness.
No, I do not believe that the stories of Jesus literally climbing high places, only and simply to commune with God the Father, are anything but elements of the Christ mythology. Guided imagery, pathworking, meditation with symbols, are so much more convenient and practical. And God, to revert to a more religious approach, is to be found in the inner space, not out in the realist and physical world. Heaven, in the form of enlightenment, is open to anyone who seeks.