Genesis 28:10-12, 16-18, Inclusive Translation:

Jacob left Beersheba and set out for Haran. When he reached a certain place, he passed the night there. He took a rock and used it for a headrest and lay down to sleep there. During the night he had a dream: there was a ladder, standing on the ground with its top reaching to heaven; and messengers of God were going up and coming down the ladder.

Then Jacob woke and said, “Truly, YHWH is in this place, and I never knew it!” He was filled with trembling and said, “How awe-inspiring this place is! This is nothing less than the house of God; this is the gate of heaven!”