And Moses went out to meet his father in law, and did obeisance, and kissed him; and they asked each other of their welfare; and they came into the tent.  And Moses told his father in law all that the LORD had done unto Pharaoh and to the Egyptians for Israel’s sake, and all the travail that had come upon them by the way, and how the LORD delivered them.  And Jethro rejoiced for all the goodness which the LORD had done to Israel, whom He had delivered out of the hand of the Egyptians.  And Jethro said, “Blessed be the LORD, who hath delivered you out of the hand of the Egyptians, and out of the hand of Pharaoh, who hath delivered the people from under the hand of the Egyptians.  Now I know that the LORD is greater than all gods: for in the thing wherein they dealt proudly He was above them.” And Jethro, Moses’ father in law, took a burnt offering and sacrifices for God: and Aaron came, and all the elders of Israel, to eat bread with Moses’ father in law before God.
Exodus 18:7-12

Tremble, thou earth, at the presence of the Lord, at the presence of the God of Jacob; which turned the rock into a standing water, the flint into a fountain of waters.
Psalm 114:7-8

When thou sittest to eat with a ruler, consider diligently what is before thee: and put a knife to thy throat, if thou be a man given to appetite.
Be not desirous of his dainties: for they are deceitful meat.
Proverbs 23:1-3