As you read the book of Colossians, Paul repeatedly holds up the supremacy and sufficiency of Jesus in all things and over all things. This would be true for any of the churches he sent a letter (Epistle), but it was especially necessary at Colossae. There were those at Colossae undermining Christ’s sufficiency. They did this–as far as we know–not by rejecting Jesus, denying his humanity or divinity, or denying the claims of Jesus. Instead, it was more subtle. This false teaching conveyed the idea that Jesus is a great start, but to really arrive, grow, be happy, or experience the highest levels of knowledge and religious experience, other things needed added to Jesus or sought alongside of Jesus. It’s a “Jesus plus” or “Jesus and” theology rather than a “Jesus alone” theology.