These words which I command you this day: Moses is talking about the laws that, on that day, he is ordering the Israelites to obey. In verses 6-9 the second person “you” and “your” are singular in the Hebrew text; the people are addressed as a whole, and every individual is included. However, in some languages the plural will be more natural style.

Shall be upon your heart: in Hebrew thought the heart was the center of thought, of intellectual activity, as was noted under verse 5 and 4.29. This command means they are to remember and never forget these commandments. Revised English Bible has “are to be remembered and taken to heart”; New Jewish Publication Society’s Tanakh translates “take to heart.” Another model is “Memorize these laws that I am giving you today.”

Quoted with permission from Bratcher, Robert G. and Hatton, Howard A. A Handbook on Deuteronomy. (UBS Helps for Translators). New York: UBS, 2000. For this and other handbooks for translators see here .