Paul grounds our unity in the unity of the Trinity, not in our ability to get along. We get along because Father, Son, and Spirit have allowed us to do so. We can give grace because we have been given grace. Jesus humbled himself. The Father gently and patiently works out our salvation. The Holy Spirit forbears and abides with us even in the face of our sin, convicting and correcting us, but never condemning. Father, Son, and Spirit were torn apart so that we might be united with them and with each other.
[Relationships – a mess worth making, Lane & Tripp, 46]