'Sealed' in the Bible

And in Him you Gentiles also, after listening to the Message of the truth, the Good News of your salvation--having believed in Him--were sealed with the promised Holy Spirit;

And beware of grieving the Holy Spirit of God, in whom you have been sealed in preparation for the day of Redemption.

And I saw lying in the right hand of Him who sat on the throne a book written on both sides and closely sealed with seven seals.

"Injure neither land nor sea nor trees," he said, "until we have sealed the bondservants of our God upon their foreheads."

When the sealing was finished, I heard how many were sealed out of the tribes of the descendants of Israel. They were 144,000.

Of the tribe of Judah, 12,000 were sealed; Of the tribe of Reuben, 12,000; Of the tribe of Gad, 12,000;