Marked with the Symbol of Jesus Christ

In the Bible, a mark on the forehead is a symbol of ownership. By having his forehead marked with the sign of a cross, a person symbolizes that he belongs to Jesus Christ, who died on a cross. This is in imitation of the spiritual mark or seal that is put on a Christian in baptism, when he is delivered from slavery to sin and the devil and made a slave of righteousness and Christ (Rom. 6:3-18). It is also imitates the way the righteous are described in the book of Revelation: "Do not harm the earth or the sea or the trees till we have sealed the servants of our God upon their foreheads" (Rev.7:3). Or again, "Then I looked, and, lo, on Mount Zion stood the Lamb and with him a hundred and forty-four thousand who had his name and his Father's name written on their foreheads" (Rev. 14:1). This is in contrast to the followers of the beast, who have the number 666 on their foreheads or hands.