Colossians 1:18, 24
Colossians 1:18 ESV
And he is the head of the body, the church. He is the beginning, the firstborn from the dead, that in everything he might be preeminent.
Colossians 1:24 ESV
Now I rejoice in my sufferings for your sake, and in my flesh I am filling up what is lacking in Christ’s afflictions for the sake of his body, that is, the church