We have a great salvation, and Jesus is the whole of it. He has pre-eminence in all things, and He is the Head of His Body, the Church, of which we are members. The Colossians understood the power of the Gospel. They had been called to be saints of God and were conveyed into the Kingdom of His Son. They were increasing in Him and in the good works of love that mark our discipleship.
All things means all things - visible and invisible. Colossians 1.15-18