'Seal' in the Bible

Do not work for the food that perishes, but the food that remains to eternal life, which the Son of Man will give to you. For God the Father has set his seal on this one."

And he received the sign of circumcision [as] a seal of the righteousness by faith which [he had] {while uncircumcised}, so that he could be the father of all who believe {although they are uncircumcised}, so that righteousness could be credited to them,

If to others I am not an apostle, yet indeed I am to you, for you are my seal of apostleship in the Lord.

However, the solid foundation of God stands firm, having this seal: "The Lord knows those who are his," and "Everyone who names the name of the Lord must abstain from unrighteousness."

And when he opened the second seal, I heard the second living creature saying, "Come!"

And when he opened the third seal, I heard the third living creature saying, "Come!" And I looked, and behold, a black horse, and the one seated on it had a balance scale in his hand.

And when he opened the fourth seal, I heard a voice from the fourth living creature saying, "Come!"

And when he opened the fifth seal, I saw under the altar the souls of those who had been slaughtered because of the word of God and because of the testimony which they had,

And I watched when he opened the sixth seal, and a great earthquake took place, and the sun became black like sackcloth made of hair, and the whole moon became like blood,

And I saw another angel ascending {from the east}, holding the seal of the living God, and he cried out with a loud voice to the four angels {who were given permission} to damage the earth and the sea,

And when he opened the seventh seal, there was silence in heaven [for] about half an hour.

And it was told to them that they should not damage the grass of the earth or any green [plant] or any tree, except those people who do not have the seal of God on their foreheads.

And when the seven thunders spoke, I was about to write, and I heard a voice from heaven saying, "Seal up [the things] which the seven thunders spoke, and do not write them!"

And he said to me, "Do not seal up the words of the prophecy of this book, for the time is near!