en_tn/psa/021/008.md

Your hand will seize

Here "hand" represents power. Alternate translation: "Your power will seize" or "You will powerfully seize" (See: rc://en/ta/man/translate/figs-metonymy)

Your hand ... hate you

Possible meaning of all occurrences of "your" and "you" are 1) they refer to the king or 2) they refer to God.

your right hand will seize those who hate you

This means the same thing as the first part of the sentence. It emphasizes that God will give the king the power to stop his enemies. (See: rc://en/ta/man/translate/figs-parallelism)