Have pity upon me

"Have compassion on me"

for the hand of God has touched me

Here "touched me" is a metonym for "hit me." And, "hand" represents God's power. Causing Job to suffer is spoken of as if Yahweh were physically hitting him with his hand. AT: "because God has afflicted me" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-metaphor)