Deuteronomy 4:9

Heed - To be careful to consider.

Only take heed to thyself - Be circumspect and watchful.

Keep thy soul diligently - Be mindful of thy eternal interests. Whatever becomes of the body, take care of the soul.

Lest thou forget - God does his work that they may be had in everlasting remembrance; and he that forgets them, forgets his own mercies. Besides, if a man forget the work of God on his soul, he loses that work.

Lest they depart from thy heart - It is not sufficient to lay up Divine things in the memory, they must be laid up in the heart. Thy word have I hidden in my heart, says David, that I might not sin against thee. The life of God in the soul of man can alone preserve the soul to life everlasting; and this grace must be retained all the days of our life. When Adam fell, his condition was not meliorated by the reflection that he had been once in paradise; nor does it avail Satan now that he was once an angel of light. Those who let the grace of God depart from their hearts, lose that grace; and those who lose the grace, fall from the grace; and as some have fallen and risen no more, so may others; therefore, take heed to thyself, etc. Were it impossible for men finally to fall from the grace of God, exhortations of this kind had never been given, because they would have been unnecessary, and God never does an unnecessary thing.

But teach them thy sons - If a man know the worth of his own soul, he will feel the importance of the salvation of the souls of his family. Those who neglect family religion, neglect personal religion; if more attention were paid to the former, even among those called religious people, we should soon have a better state of civil society. On family religion God lays much stress; and no head of a family can neglect it without endangering the final salvation of his own soul. See the note at the conclusion of Genesis 18:32 (note), Genesis 19:38 (note), and Deuteronomy 6:7 (note).

A full stop should end Deuteronomy 4:9; and Deuteronomy 4:10 begin, At the time that thou stoodest, etc. Deuteronomy 4:11 then ye came near, etc. Moses, exhorting to heedful observance of the Law, strives to renew the impressions of that tremendous scene which attended its promulgation at Sinai.