But we have this treasure in jars of clay, to show that the surpassing power belongs to God and not to us.
2 Corinthians 4:7

It's impossible for the full power and glory of God to be contained in mortal flesh, mere "jars of clay". Whatever divine light shines through us into the world, by way of our actions and words, comes from God himself, not us. Nothing we do in our own power is any better than the good that pagans do. Almost everyone loves their children and friends and a few even love their enemies, but the power of YHWH shows the image of Yeshua to the world by strengthening us against persecution even as we return kindness to those who persecute us.