Revelation 5:9-10

And they sing a new song, saying, "Worthy art Thou to take the book, and to open its seals; because Thou wast slain, and didst redeem to God, by Thy blood, some of every tribe, and tongue, and people, and nation;

Revelation 14:3

And they sing as it were a new song before the throne, and before the four living creatures and the elders; and no one was able to learn the song, except the hundred and forty-four thousand, who had been purchased out of the earth.

Treasury of Scripture Knowledge

Summary

I will sing a new song unto thee, O God: upon a psaltery and an instrument of ten strings will I sing praises unto thee.

Bible References

Sing a new

Revelation 5:9
And they sing a new song, saying, "Worthy art Thou to take the book, and to open its seals; because Thou wast slain, and didst redeem to God, by Thy blood, some of every tribe, and tongue, and people, and nation;
Revelation 14:3
And they sing as it were a new song before the throne, and before the four living creatures and the elders; and no one was able to learn the song, except the hundred and forty-four thousand, who had been purchased out of the earth.