And the LORD said unto him, Go through the midst of the city, through the midst of Jerusalem, and set a mark upon the foreheads of the men that sigh and that cry for all the abominations that be done in the midst thereof. Ezekiel 9:4
"Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads." Revelation 7:3
Now these are thematic references to the God honoring mark we WANT so that that other mark of the beast will have no place in us.
and on a positive note:
Now these are thematic references to the God honoring mark we WANT so that that other mark of the beast will have no place in us.