I am glad when I suffer for you in my body, for I am completing what remains of Christ's sufferings for his body, the church.
God has given me the responsibility of serving his church by proclaiming his message in all its fullness to you Gentiles.
This message was kept secret for centuries and generations past, but now it has been revealed to his own holy people.
For it has pleased God to tell his people that the riches and glory of Christ are for you Gentiles, too. For this is the secret: Christ lives in you, and this is your assurance that you will share in his glory.
So everywhere we go, we tell everyone about Christ. We warn them and teach them with all the wisdom God has given us, for we want to present them to God, perfect in their relationship to Christ.
References for Colossians 1:28
I work very hard at this, as I depend on Christ's mighty power that works within me.