Kiss

Concise Bible Dictionary:

This common mode of salutation among relatives is sanctified by its adoption in the church. Five of the Epistles close with the exhortation to greet one another with a holy kiss, or kiss of love (Rom. 16:1616Salute one another with an holy kiss. The churches of Christ salute you. (Romans 16:16); 1 Cor. 16:2020All the brethren greet you. Greet ye one another with an holy kiss. (1 Corinthians 16:20); 2 Cor. 13:1212Greet one another with an holy kiss. (2 Corinthians 13:12); 1 Thess. 5:2626Greet all the brethren with an holy kiss. (1 Thessalonians 5:26); 1 Peter 5:1414Greet ye one another with a kiss of charity. Peace be with you all that are in Christ Jesus. Amen. (1 Peter 5:14)). When Paul said farewell to the elders of Ephesus, they wept sore, and fell on his neck and kissed him. Permission to kiss the hand of a superior is a mark of honor. The heathen kissed their gods (1 Kings 19:1818Yet I have left me seven thousand in Israel, all the knees which have not bowed unto Baal, and every mouth which hath not kissed him. (1 Kings 19:18); Hos. 13:22And now they sin more and more, and have made them molten images of their silver, and idols according to their own understanding, all of it the work of the craftsmen: they say of them, Let the men that sacrifice kiss the calves. (Hosea 13:2)). In the case of distant objects of worship, like the sun and moon, they kissed the hand (Job 31:26-2726If I beheld the sun when it shined, or the moon walking in brightness; 27And my heart hath been secretly enticed, or my mouth hath kissed my hand: (Job 31:26‑27)), hence the most usual word for worship in the New Testament is προσκυνέω, from κυνέω, to kiss. Kings and judges of the earth are exhorted to kiss the Son when He comes to reign, lest He be angry, and they perish (Psalm 2:1212Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little. Blessed are all they that put their trust in him. (Psalm 2:12)).