1 Corinthians 16:20

All the brethren. Doubtless, the believers in Ephesus. They were apparently interested in the church at Corinth and desired that their brethren know of their love and concern for them. The same spirit actuates all who love the Lord and His people; they are interested in all other members of the great family of God. This spirit of loving fellowship, prevalent among God’s people, is a source of amazement to those who do not know the love of God, and is an evidence of the truth of the gospel (see John 17:23; 3T 446, 447; SC 115).

Kiss. A common form of greeting in the East. The holy kiss was a token of Christian affection among believers (cf. Rom. 16:16; 2 Cor. 13:12; 1 Thess. 5:26; 1 Peter 5:14). Paul seems to have desired the Corinthian believers to give this token to one another when they received his letter, as a pledge of their newly awakened Christian unity and love. The custom, at least as later enjoined in the Apostolic Constitutions (2:57; 8:11), was for men to greet men, and women to greet women. According to Palestinian custom the kiss was on the cheek, forehead, beard, hands, or feet, but not on the lips.