Not strong enough. Originally the verb means to make haste. So the kindred noun σπουδή haste, Mar 6:25; Luk 1:39. Hence diligence. Rev., here, giving diligence.
To keep (τηρεῖν)
See on reserved, 1Pe 1:4.
Unity of the Spirit
Wrought by the Holy Spirit.
Bond of peace
The bond which is peace. Compare Eph 2:14, our peace - made both one. Christ, our peace, is thus a bond of peace. Others, however, treat in the bond as parallel with in love of Eph 4:2, and cite Col 3:14, “love the bond of perfectness.”