I love the part that says how we’re not called to be kind to people because they somehow have earned it or deserve it in any way, but because Jesus has been kind to us.
I think sometimes we forget that it took as much grace to save any of us as it took to save that death-row inmate or the hopelessly addicted junkie or that thief on the cross with his last minute plea. All of us who belong to Jesus are standing on level ground at the foot of the cross because we all equally still need Jesus to save us and keep us and sustain us through all the rest of our days.
So be kind. Remember the lovingkindness that was shown to you once when you least expected or deserved it. Remember that while you and I were yet sinners, Christ died for us.