Verses with the word sing in the New Testament (5 verses):

Romans 15:9
And that the Gentiles might glorify God for his mercy; as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name.

1 Corinthians 14:15
What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.

Hebrews 2:12
Saying, I will declare thy name unto my brethren, in the midst of the church will I sing praise unto thee.

James 5:13
Is any among you afflicted? let him pray. Is any merry? let him sing psalms.

Revelation 15:3
And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvellous are thy works, Lord God Almighty; just and true are thy ways, thou King of saints.