This message explains the Christian Gospel, beginning with the horror of our position outside of Christ, then showing how Christ has dealt with all of that creating reconciliation with God, but calling us to the vital need of persevering in the faith.

21 And you, who once were alienated and hostile in mind, doing evil deeds, 22 he has now reconciled in his body of flesh by his death, in order to present you holy and blameless and above reproach before him, 23 if indeed you continue in the faith, stable and steadfast, not shifting from the hope of the gospel that you heard, which has been proclaimed in all creation[a] under heaven, and of which I, Paul, became a minister

Colossians 1:21-23 English Standard Version (ESV)