Classic in the old testament. Genesis chapter 28, section 10- 19.
Jacob left Beersheba and went to Haran. When I arrived at a place, I stayed there because the sun had set, so I picked up a stone from that place, put it under my head and lay there. He dreamed that a ladder stood on the ground, the top of the ladder reached the sky, and the angel of God was on the ladder, going up and down. The Lord stood on the ladder and said, "I am the Lord, the God of your father Abraham and Isaac. I will give the land where you are lying to you and your descendants. Your descendants will be like the dust of the earth, scattered to the east, west, north and south, and all the families of the earth will be blessed through you and your descendants. I am with you, too. Wherever you go, I will bless you and bring you back to this land. I will not abandon you until I fulfill my promise to you. " Jacob woke up and said, "The Lord is really here! I have no idea. " He said in fear, "How terrible this place is! This is just the temple of God and the gate of heaven. "
This code name is also called "ladder". It means the road to holiness and happiness.