5 And say to them, This is what the Lord has said: In the day when I took Israel for myself, when I made an oath to the seed of the family of Jacob, and I gave them knowledge of myself in the land of Egypt, saying to them with an oath, I am the Lord your God;

Matthew Henry's Commentary on Ezekiel 20:5

Commentary on Ezekiel 20:1-9

(Read Ezekiel 20:1-9)

Those hearts are wretchedly hardened which ask God leave to go on in sin, and that even when suffering for it; see verse 32. God is justly angry with those who are resolved to go on still in their trespasses. Cause the people to know the evil deeds of their fathers, that they may see how righteous it was with God to cut them off.