en_tn/1ch/28/08.md

David continues to speak to the Israelites.

Now then

This indicates that David starts a new phase in his speech.

keep and try to carry out

These two words basically mean the same thing and are used together to emphasize the importance of doing what God commands. (See: rc://en/ta/man/translate/figs-doublet)

your children after you

AT: "your children who will take your place after you die" (See: rc://en/ta/man/translate/figs-idiom)