Then I looked, and there was the Lamb, standing on Mount Zion. With him were one hundred forty-four thousand who had his name and his Father's name written on their foreheads.
References for Revelation 14:1
I heard a sound from heaven that was like the sound of rushing water and loud thunder. The sound I heard was like that of harpists playing their harps.
They sing a new song in front of the throne, the four living creatures, and the elders. And no one could learn the song except the one hundred forty-four thousand who had been purchased from the earth.
They weren't defiled with women, for these people who follow the Lamb wherever he goes are virgins. They were purchased from among humankind as early produce for God and the Lamb.
No lie came from their mouths; they are blameless.