Passage
To the saints and faithful brethren in Christ [that are] at Colossae: Grace to you and peace from God our Father.
To the saints and faithful brethren in Christ [that are] at Colossae: Grace to you and peace from God our Father.
Colossians 1:1 Paul, an apostle of Christ Jesus through the will of God, and Timothy our brother,
Colossians 1:2 To the saints and faithful brethren in Christ [that are] at Colossae: Grace to you and peace from God our Father.
Colossians 1:3 We give thanks to God the Father of our Lord Jesus Christ, praying always for you,
Colossians 1:4 having heard of your faith in Christ Jesus, and of the love which ye have toward all the saints,
The verse centers on "grace", "faith", "saints", "faithful", "brethren", "christ", "colossae", and "peace". It is saying that salvation is received as God's gift through faith, so boasting is pushed out by the wording itself.
The nearby context moves from verse 1's "Paul an apostle of Christ Jesus through..." into verse 3's "We give thanks to God the Father...", so "grace" and "faith" belong inside that flow. In Colossians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "grace" and "faith" with trust shaped by these words, not by a vague optimism outside the passage.