Sealed

Revelation 7:3 KJV
Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads.

Adam Clarke makes this comment, “By sealing we are to understand consecrating the persons in a more especial manner to God, and showing, by this mark of God upon them, that they were under his more immediate protection, and that nothing should hurt them. It was a custom in the east, and indeed in the west too, to stamp with a hot iron the name of the owner upon the forehead or shoulder of his slave.
It is worthy of remark that not one Christian perished in the siege of Jerusalem; all had left the city, and escaped to Pella. This I have often had occasion to notice."[1]

I was reminded that the Word of God says of the Christian
Eph 1:13-14
In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory. (KJV)

And
Eph 4:30
And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption. (KJV)

And
2 Cor 1:22
Who hath also sealed us, and given the earnest of the Spirit in our hearts. (KJV)

So while the passage in Revelation has to do with Jewish evangelists in the Tribulation, there is a similar sealing that belongs to the Christian in our day.

There is much hurt being done in this world today.
Sin is rampant and rising.
The faith is being washed out by heresies of every sort
Wicked religions are rising in prominence among those with political and world influence

But the Christian still has this claim. He can still pray for sealing and protection in the midst of it all.

[1] E-Sword 7.7.7, Adam Clarke's Commentary on the Bible, Adam Clarke, LL.D., F.S.A., (1715-1832)