Know and consider it in thy heart From all that thou hast seen, heard, and experienced. That the Lord he is God, &c. Settle it in thy heart that none but the Creator of all things could perform those mighty acts.
Related Commentaries of Deuteronomy 4:39
Deuteronomy 4:39
39 Know therefore this day, and consider it in thine heart, that the LORD he is God in heaven above, and upon the earth beneath: there is none else.