Revelation 7:2-4

2Then I saw another angel who was coming up from the east. He was carrying the seal of the God who lives for ever. He shouted loudly to the four other angels. They had received authority to destroy the land and the sea.

3But he shouted to them, ‘Do not destroy the land or the sea or the trees yet. Wait until we put a seal on the heads of God's servants. God's seal on the front of their heads will keep them safe.’

4Then I heard how many people received God's seal. The number of people was 144,000. They came from all the tribes of Israel's people: