Paul proclaimed the wonderful truth in Colossians that we are complete in Christ (2:10). He seems to define that completeness in at least two ways: we are completely forgiven (2:13-14), and we are completely victorious (2:15).
Those who are in Christ have been completely forgiven of their sins. We were once dead spiritually because of our trespasses, but now in Christ, God has forgiven us all trespasses (2:13). Also, because we had broken God’s commandments, a certificate of indebtedness had been written up against us. But Christ paid the debt of our sins on the cross, and therefore wiped away the record of our debt (2:14). “My sin—oh, the bliss of this glorious thought! My sin, not in part but the whole, is nailed to the cross, and I bear it no more.”
Those who are in Christ are completely victorious over the power of darkness (2:15). This was hinted at earlier when Paul wrote, “He has delivered us from the power of darkness and transferred us into the kingdom of the Son of His love” (1:13). Christ triumphed over the devil and his demons in His death and resurrection. “Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil” (Hebrews 2:14). We are victorious in Christ! “For I am persuaded that neither death nor life, nor angels nor principalities nor powers, nor things present nor things to come, 39 nor height nor depth, nor any other created thing, shall be able to separate us from the love of God which is in Christ Jesus our Lord” (Romans 8:38-39).