Ephesians 6:21-24 form the conclusion of the Epistle, in commendation of Tychicus’ salutation and blessing. The extreme brevity and generality of this section here — in contrast with St. Paul’s practice in every other Epistle, except the Second Epistle to the Corinthians and the Epistle to the Galatians (both of which have the abruptness of indignation) and especially with the parallel Epistle to the Colossians — seem to bear on the question of the encyclical character of this Epistle.
Related Commentaries of Ephesians 6:3
Ephesians 6:3-4
3 That it may be well with thee, and thou mayest live long on the earth.
4 And, ye fathers, provoke not your children to wrath: but bring them up in the nurture and admonition of the Lord.