Verse 17. The salutation of Paul with mine own hand. See Barnes "1 Co 16:21".

Which is the token in every epistle. Gr., sign. This signature is a sign or proof of the genuineness of the Comp. See Barnes "Ga 6:11".

So I write. Referring to some mark or method which Paul had of signing his name which was well known, and which would easily be recognised by them.

{f} "salutation" 1 Co 16:21