Revelation 14:2-4

Living Bible

² And I heard a sound from heaven like the roaring of a great waterfall or the rolling of mighty thunder. It was the singing of a choir accompanied by harps.

³ This tremendous choir—144,000 strong—sang a wonderful new song in front of the throne of God and before the four Living Beings and the twenty-four Elders; and no one could sing this song except those 144,000 who had been redeemed from the earth. ⁴ For they are spiritually undefiled, pure as virgins,^[a] following the Lamb wherever he goes. They have been purchased from among the men on the earth as a consecrated offering to God and the Lamb.