Revelation 5:9-10

And they sang a new song, saying, "Worthy art thou to take the book And to open its seals; For thou wast slain and didst ransom for God Men out of every tribe and tongue and people and nation;

Revelation 14:3

They were singing a new song before the throne, and before the four Living Creatures and the Elders; and none can learn that song, except the one hundred and forty and four thousand, who had been 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 sang a new song, saying, "Worthy art thou to take the book And to open its seals; For thou wast slain and didst ransom for God Men out of every tribe and tongue and people and nation;
Revelation 14:3
They were singing a new song before the throne, and before the four Living Creatures and the Elders; and none can learn that song, except the one hundred and forty and four thousand, who had been redeemed from the earth.