Ephesians 6:3

That it may be well with thee, and thou mayest live long on the earth.

Cross-reference

Deuteronomy 4:40 promises well-being and long life for keeping God’s commands—the OT source of the promise attached here.

Deuteronomy 5:16 is the original commandment with the same promise — the direct source Paul quotes in Ephesians.

Deuteronomy 5:29 uses the same promise language—'that it might be well'—for keeping all commandments, closely paralleling the promise in Ephesians 6:3.

Genesis 28:7 shows Jacob obeying his parents, providing a positive example of the honor commanded in Ephesians 6:3.