so that you and your children and grandchildren may fear the LORD your God all the days of your lives by keeping all His statutes and commandments that I give you, and so that your days may be prolonged.
KJV
That thou mightest fear the LORD thy God, to keep all his statutes and his commandments, which I command thee, thou, and thy son, and thy son’s son, all the days of thy life; and that thy days may be prolonged.
ASV
that thou mightest fear Jehovah thy God, to keep all his statutes and his commandments, which I command thee, thou, and thy son, and thy son’s son, all the days of thy life; and that thy days may be prolonged.