the seal comes from Jehovah God himself , from the sunrising,Adstar said:The question has been asked: What is the seal talked of that is put upon the 144,000 preserved Jews.
Whatever it is the difference between the seal and the mark is who will be putting it on people.
Revelation 7
2 Then 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 granted to harm the earth and the sea, 3 saying, Do not harm the earth, the sea, or the trees till we have sealed the servants of our God on their foreheads. 4 And I heard the number of those who were sealed. One hundred and forty-four thousand of all the tribes of the children of Israel were sealed:
The mark of the beast will not be given by angels but by the powers that be on earth under the orders of the Anti-christ.
So we do not need to know what the seal of God is because it is placed on their foreheads not for our reference but for those who will be agenst of Gods wrath upon the earth. So that they will not cause wrath upon the 144,000.
Revelation 9
1 Then the fifth angel sounded: And I saw a star fallen from heaven to the earth. To him was given the key to the bottomless pit. 2 And he opened the bottomless pit, and smoke arose out of the pit like the smoke of a great furnace. So the sun and the air were darkened because of the smoke of the pit. 3 Then out of the smoke locusts came upon the earth. And to them was given power, as the scorpions of the earth have power. 4 They were commanded not to harm the grass of the earth, or any green thing, or any tree, but only those men who do not have the seal of God on their foreheads. 5 And they were not given authority to kill them, but to torment them for five months. Their torment was like the torment of a scorpion when it strikes a man. 6 In those days men will seek death and will not find it; they will desire to die, and death will flee from them.
All Praise The Ancient Of Days
And I saw another angel ascending from the sunrising, having a seal of [the] living God; and he cried with a loud voice to the four angels to whom it was granted to harm the earth and the sea, revelation 7;2 ....................................................yes this angel has the seal of the living God. and it is sealing those who have Gods approval
Work, not for the food that perishes, but for the food that remains for life everlasting, which the Son of man will give YOU; for upon this one the Father, even God, has put his seal [of approval]. John 6;27