Galatians 6:11 also mentions Paul writing with his own hand, emphasizing personal authentication of his letters.

Colossians 4:18 contains the same 'salutation by my hand' formula, showing Paul's consistent closing practice.

2 Thessalonians 3:17 explicitly identifies this handwritten salutation as Paul's authenticating token in every epistle.

In Philemon 1:19, Paul similarly signs with his own hand, emphasizing personal involvement and authenticity.