Jamieson, Fausset and Brown on 2 Corinthians 5:11

11. terror of the Lord--the coming judgment, so full of terrors to unbelievers [Estius]. Ellicott and Alford, after Grotius and Bengel, translate, "The fear of the Lord" (2Co 7:1; Ec 12:13; Ac 9:31; Ro 3:18; Ep 5:21).

persuade--Ministers should use the terrors of the Lord to persuade men, not to rouse their enmity (Jude 23). Bengel, Estius, and Alford explain: "Persuade men" (by our whole lives, 2Co 5:13), namely, of our integrity as ministers. But this would have been expressed after "persuade," had it been the sense. The connection seems as follows: He had been accused of seeking to please and win men, he therefore says (compare Ga 1:10), "It is as knowing the terror (or fear) of the Lord that we persuade men; but (whether men who hear our preaching recognize our sincerity or not) we are made manifest unto God as acting on such motives (2Co 4:2); and I trust also in your consciences." Those so "manifested" need have no "terror" as to their being "manifested (English Version, 'appear') before the judgment-seat" (2Co 5:10).