God touching a person's heart is an idiom that means God put something in their mind or moved them to do something. AT: "who wanted to go with Saul because God had changed their thinking" (See: [[rc://en/ta/man/translate/figs-idiom]])
This is a rhetorical question that is used to express sarcasm. AT: "This man has no power to save us!" (See: [[rc://en/ta/man/translate/figs-rquestion]])