He emerged from the black hole of death still alive and still in love with us.
That he emerged from the black hole of death still alive is the proof that Jesus is God. Nobody emerges alive from the black hole of death. He did.
That he emerged from the black hole of death still in love with us, however, proves so much more than "mere" divinity. This added detail reveals to us that our simple conception of divinity as omnipotence is not quite accurate. Divinity has another aspect besides omnipotence. That love survived the evil we did to him is the proof that divinity is love.