“…I heard a sound from heaven like the roaring of a great waterfall or the rolling of mighty thunder. It was singing of a choir accompanied by harps. This… choir—144,000 strong—sang a… new song in front of the throne of God and before the four Living Beings and the  Elders. …No one could sing this song except those 144,000 who had been redeemed from the earth. …They are spiritually undefiled… [Rev 7:3-8, TLB], 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.