Genesis 28:16-21

Then Jacob awoke from his sleep and he said, “Without any doubt the LORD is in this place, and I did not realize it.” So he was afraid and said, “How fearful and awesome is this place! This is none other than the house of God, and this is the gateway to heaven.” So Jacob got up early in the morning, and took the stone he had put under his head and he set it up as a pillar [that is, a monument to the vision in his dream], and he poured [olive] oil on the top of it [to consecrate it]. He named that place Bethel (the house of God); the previous name of that city was Luz (Almond Tree). Then Jacob made a vow (promise), saying, “If God will be with me and will keep me on this journey that I take, and will give me food to eat and clothing to wear, and if [He grants that] I return to my father’s house in safety, then the LORD will be my God.