|Easton's Bible Dictionary|
Occurs only Ephesians 5:19 and Colossians 3:16. The verb to "sing an hymn" occurs Matthew 26:30 and Mark 14:26. The same Greek word is rendered to "sing praises" Acts 16:25 (R.V., "sing hymns") and Hebrews 2:12. The "hymn" which our Lord sang with his disciples at the last Supper is generally supposed to have been the latter part of the Hallel, comprehending Psalm 113-118. It was thus a name given to a number of psalms taken together and forming a devotional exercise.
The noun hymn is used only with reference to the services of the Greeks, and was distinguished from the psalm. The Greek tunes required Greek hymns. Our information regarding the hymnology of the early Christians is very limited.
Noah Webster's Dictionary
1. (n.) An ode or song of praise or adoration; especially, a religious ode, a sacred lyric; a song of praise or thanksgiving intended to be used in religious service; as, the Homeric hymns; Watts' hymns.
2. (v. t.) To praise in song; to worship or extol by singing hymns; to sing.
3. (v. i.) To sing in praise or adoration.
Int. Standard Bible Encyclopedia
him (humnos): In Colossians 3:16 Ephesians 5:19 Paul bids his readers sing "psalms and hymns and spiritual songs." Gregory of Nyssa (4th century) distinguishes these as follows: the Psalms were accompanied by instruments, the hymns were mainly vocal, and the song, ode, was a general term comprehending both. This distinction might suggest that the psalm belonged especially to the public worship of the church, while the hymn was the production, more or less spontaneous, of the individual member. The inference is, however, inconsistent with 1 Corinthians 14:26, and it is probable that in the apostolic age, at least, the terms were used indiscriminately. Of Christian psalms or hymns we have examples in the New Testament. Luke 1 and 2 contain such hymns in the songs of Mary, Zacharias and Simeon. The Apocalypse is studded with hymns or odes, many of them quite general in character, and probably borrowed or adapted from Jewish books of praise. In the Epistles of Paul, especially the later ones, fragments of hymns seem to be quoted. Lightfoot detects one in Ephesians 5:14, and others readily suggest themselves.
It is probable that the hymn mentioned as having been sung by Jesus and the disciples after the Passover (Matthew 26:30 Mark 14:26) was the second part of the Hallel, i.e. Psalms 115-118, and the hymns of Paul and Silas were most likely also taken from the Psalter. But the practice of interpolating and altering Jewish non-canonical books, like the Psalter of Solomon and the recently discovered Odes of Solomon, shows that the early Christians adopted for devotional purposes the rich store of sacred poetry possessed by their nation. For the music to which these psalms, etc., were sung, see MUSIC; SONG.
Hymn (5 Occurrences)
Matthew 26:30 When they had sung a hymn, they went out to the Mount of Olives. (WEB KJV WEY ASV DBY WBS YLT NAS RSV NIV)
Mark 14:26 When they had sung a hymn, they went out to the Mount of Olives. (WEB KJV WEY ASV DBY WBS YLT NAS RSV NIV)
1 Corinthians 14:26 What is it then, brothers? When you come together, each one of you has a psalm, has a teaching, has a revelation, has another language, has an interpretation. Let all things be done to build each other up. (See RSV NIV)
Hebrews 2:12 as when He says: "I will proclaim Thy name to My brothers: in the midst of the congregation I will hymn Thy praises;" (WEY)
Psalms 40:3 He has put a new song in my mouth, even praise to our God. Many shall see it, and fear, and shall trust in Yahweh. (See NIV)