Col 3:18-21 shows the evidences of spiritual maturity in the home; Col 3:22-25; Col 4:1 covers evidence in the workplace; Col 4:2-6 covers society. Col 3:19 says 'husbands do not be bitter (means sharp; harsh; cutting) against them [your wife]'. Col 3:23 'Do your work heartily as unto the Lord'. Col 4:7-18 contains a hall of faith. Finally; the '...One Another Commands':
'bear with' (Col 3:13; Eph 4:2);
'forgive...' (Eph 4:32; Col 3:13);
'confess to...' (Jam 5:16);
'pray for...' (Jam 5:16);
'encourage...' (1Th 5:11; Heb 10:25);
'Love...' (Joh 5:17; Joh 13:34);
'be reconciled...' (Mat 5:23-24);
'be kind to...' (Eph 4:32);
'admonish...' (Rom 15:14; Mat 18:15);
'act as members of...' (Rom 12:5);
'devoted to...' (Rom 12:10);
'honor...' (Rom 12:10);
'accept...' (Rom 15:17);
'greet...'; 'serve...' (Gal 5:13);
'bear ... burdens' (Gal 6:2);
'be subject to...' (Eph 5:21);
'be like minded...' (1Co 1:10; Phi 2:2);
'be hospitable...' (1Pe 4:9);
'be a blessing to...' 1Pe 3:9);
'give of yourself...' (2Co 8:5);
'assemble with...' (1Pe 3:9; Heb 10:25);
'stimulate...' (Heb 10:24);
'meet the needs of...' (Act 4:32-37);
'have the same care for...' (1Co 12:25); and
'seek the good for...' (1Th 5:15).
Paul never met the Colossians but wrote to them from a Roman prison around 62 AD to counter misconceptions of his day. It magnifies the character of Jesus Christ more than any other book in the New Testament, and counters misconceptions of our day as well. The key verse may well be Col 1:18 "...that in all things, He might have preeminence."