18 and the Lord has declared this day concerning you that you are a people for his own possession, as he has promised you, and that you are to keep all his commandments,

Matthew Henry's Commentary on Deuteronomy 26:18

Commentary on Deuteronomy 26:16-19

(Read Deuteronomy 26:16-19)

Moses here enforces the precepts. They are God's laws, therefore thou shalt do them, to that end were they given thee; do them, and dispute them not; do them, and draw not back; do them, not carelessly and hypocritically, but with thy heart and soul, thy whole heart and thy whole soul. We forswear ourselves, and break the most sacred engagement, if, when we have taken the Lord to be our God, we do not make conscience of obeying his commands. We are elected to obedience, Titus 2:14. Holiness is true honour, and the only way to everlasting honour.