4:9 Again, however, pay very careful attention, 1 lest you forget the things you have seen and disregard them for the rest of your life; instead teach them to your children and grandchildren.
Deuteronomy 32:46
32:46 he said to them, “Keep in mind all the words I am solemnly proclaiming to you today; you must command your children to observe carefully all the words of this law.
1 tnHeb “watch yourself and watch your soul carefully.”