the seal of # 46_1CO_09_02 # If I be not an apostle unto others, yet doubtless I am to you: for the seal of mine apostleship are ye in the Lord. 
the seal of # 66_REV_07_02 # And I saw another angel ascending from the east, having the seal of the living God: and he cried with a loud voice to the four angels, to whom it was given to hurt the earth and the sea, 
the seal of # 66_REV_09_04 # And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads.