Deuteronomy 7:2 commands the Israelites to make no covenant with the inhabitants of the land, which echoes the earlier command in Exodus 23:32-33 to avoid making covenants with them to prevent idolatry.
Deuteronomy 7:6 describes Israel as a chosen people, a holy nation, which is echoed in 1 Peter 2:9 where believers are described as a chosen generation, a royal priesthood.
Deuteronomy 7:9 emphasizes God's faithfulness to His covenant, which is reiterated in Psalm 105:8-10, highlighting God's remembrance of His covenant with Abraham.
Deuteronomy 7:15 promises that God will remove sickness from Israel, similar to the promise in Exodus 15:26 where God declares He is the healer of Israel if they obey His commands.
Deuteronomy 7:21 encourages Israel not to be terrified because God is with them, a reassurance also given to Joshua in Joshua 1:9 to be strong and courageous because God is with him.