‘The salutation of me, Paul, with my own hand. Remember my bonds. Grace be with you.'
Paul would appear to have been using an amanuensis, a scribe (see Romans 16:22). But he adds his postscript to prove the genuineness of the letter. This appears to have been his common practise (compare Galatians 6:11; 1 Corinthians 16:21; 2 Thessalonians 3:17).
‘Remember my bonds.' Possibly a last emotional appeal to some to think their position through on the basis of what he suffers for Christ. Or perhaps a call for them to pray that he might be faithful in spite of them.
‘Grace be with you.' He stresses here their need for the grace of God and of the Lord Jesus Christ. That in the end is what they need and what they must trust in.