Yahweh gave the enemy into the hand of Israel

Here the word "hand" represents power. Yahweh enabling the army of Israel to conquer their enemy is spoken of as if Yahweh had put the enemy army into Israel's hand. AT: "Yahweh enabled Israel to conquer the enemy" (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-metonymy)

struck them ... struck them

"attacked them ... attacked them"