Rev 7:2-3 "Then I saw another angel coming up from the east, having the seal of the living God. He called out in a loud voice to the four angels who had been given power to harm the land and the sea: "Do not harm the land or the sea or the trees until we put a seal on the foreheads of the servants of our God."

What is the mark or the seal of God?
The seal by which we are redeemed from sin is not of perishable things such as silver or gold, but the body of Jesus.
Whoever eats the flesh of the Passover Lamb and drinks His blood has the privilege of entering eternal life.

Just as the destroying angel can see and pass over the remnant in the day of the last plagues, in the last age too, angel will recognize God's people and protect us.

Only in the Church of God Passover of the New Covenant has been kept according to the will of God.
Come to the Church of God and receive the promise of God.