Revelation 7:3-5

Young's Literal Translation

³ `Do not injure the land, nor the sea, nor the trees, till we may seal the servants of our God upon their foreheads.'

⁴ And I heard the number of those sealed, (144 thousands were sealed out of all the tribes of the sons of Israel):

⁵ of the tribe of Judah 12 thousand were sealed; of the tribe of Reuben 12 thousand were sealed; of the tribe of Gad 12 thousand were sealed;