en_tn/deu/07/09.md

for a thousand generations

"for 1,000 generations" (See: rc://en/ta/man/translate/translate-numbers)

repays those who hate him to their face

This means God will repay them quickly and openly so that they know God has punished them. (See: rc://en/ta/man/translate/figs-idiom)

he will not be lenient on whoever hates him

AT: "he will severely punish everyone who hates him" (See: rc://en/ta/man/translate/figs-litotes)

I command you

Moses is speaking to the people of Israel.