We read that when Jacob was fleeing his brother

[Mary Naeem]

Pope Shenouda III

We read that when Jacob was fleeing his brother Esau that he saw a ladder extending from earth to heaven, while the angels of God ascending and descending on it, and the Lord talked to him and gave him a promise. The Holy Bible says that Jacob said: "Surely the Lord is in this place... This is none other than the house of God, and this is the gate of heaven!" And he called that place Bethel, which means 'House of God'. He took the stone he had placed under his head, set it up as a pillar and poured oil on top of it.

How did our father Jacob know the phrase ‘House of God'? How did he know the idea of consecrating. God’s houses by pouring oil on them since nothing of this sort had been given in a written Law? No explanation can be given except that it was through Tradition.