saying, "Do not damage the earth or the sea or the trees, until we have marked the servants of our God with a seal on their foreheads."
References for Revelation 7:3
And I heard the number of those who were sealed, one hundred forty-four thousand, sealed out of every tribe of the people of Israel:
From the tribe of Judah twelve thousand sealed, from the tribe of Reuben twelve thousand, from the tribe of Gad twelve thousand,
from the tribe of Asher twelve thousand, from the tribe of Naphtali twelve thousand, from the tribe of Manasseh twelve thousand,
from the tribe of Simeon twelve thousand, from the tribe of Levi twelve thousand, from the tribe of Issachar twelve thousand,
from the tribe of Zebulun twelve thousand, from the tribe of Joseph twelve thousand, from the tribe of Benjamin twelve thousand sealed.
After this I looked, and there was a great multitude that no one could count, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, robed in white, with palm branches in their hands.
They cried out in a loud voice, saying, "Salvation belongs to our God who is seated on the throne, and to the Lamb!"
And all the angels stood around the throne and around the elders and the four living creatures, and they fell on their faces before the throne and worshiped God,
singing, "Amen! Blessing and glory and wisdom and thanksgiving and honor and power and might be to our God forever and ever! Amen."
Then one of the elders addressed me, saying, "Who are these, robed in white, and where have they come from?"