Revelation 5:9-10

And they sung a new song, saying, Worthy art thou to take the book, and to open the seals thereon; because thou hast been slaughtered, and hast redeemed us for God by thy blood, out of every tribe, and tongue, and people, and nation;

Revelation 14:3

and they sang as it were a new song before the throne, and before the four living beings, and the presbyters: and no person could learn that song, but the hundred forty-four thousand, who were redeemed from 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 sung a new song, saying, Worthy art thou to take the book, and to open the seals thereon; because thou hast been slaughtered, and hast redeemed us for God by thy blood, out of every tribe, and tongue, and people, and nation;
Revelation 14:3
and they sang as it were a new song before the throne, and before the four living beings, and the presbyters: and no person could learn that song, but the hundred forty-four thousand, who were redeemed from the earth.