en_tn/exo/07/03.md

many signs...many wonders

The words "signs" and "wonders" mean basically the same thing. God uses them to emphasize the greatness of what he will do in Egypt. (See: rc://en/ta/man/translate/figs-doublet)

put my hand on...reach out with my hand

The words "my hand" represent God's great power. (See: rc://en/ta/man/translate/figs-metonymy)