'Dealt' in the Bible

Why should you harden your hearts like [the] Egyptians and Pharaoh hardened their heart? Is it not just like when he dealt with them wantonly so that they sent them away and they left?

So they reported [it] to Saul, saying, "Look! The troops [are] sinning against Yahweh by eating [the animals] with the blood!" And he said, "You have dealt treacherously! Roll to me a large stone {today}!"

So David and his men went to Keilah and fought with [the] Philistines. They drove off their livestock and {dealt them a heavy blow}. So David saved the inhabitants of Keilah.

You have explained to me today that you have dealt well with me, how Yahweh delivered me into your hand but you did not kill me.