Charles Ellicott Commentary Deuteronomy 7:8

"but because Jehovah loveth you, and because he would keep the oath which he sware unto your fathers, hath Jehovah brought you out with a mighty hand, and redeemed you out of the house of bondage, from the hand of Pharaoh king of Egypt." — Deuteronomy 7:8 (ASV)

But because the Lord loved you. —And this, again, was not due to themselves, as he points out fully in Deuteronomy 9:4 and following.