Revelation 9:4
They were told not to harm the grass of the earth or any green growth or any tree, but only those of mankind who have not the seal of God on their foreheads.
2 Corinthians 1:22
he has put his seal on us and given us his Spirit in our hearts as a guarantee.
Revelation 14:1
Then I looked, and behold, the Lamb was standing on Mount Zion, and with him a hundred and forty-four thousand who had his name and his Father's name written on their foreheads.
Revelation 7:2-3
Then I saw another angel ascend from the rising of the sun, having the seal of the living God, and he called out with a loud voice to the four angels who had been given power to harm the earth and sea,
2 Timothy 2:19
Nevertheless, God's firm foundation stands, having this seal: "The Lord knows those who are his," and, "Everyone who names the name of the Lord must turn away from wickedness."
Revelation 20:4
Then I saw thrones, and seated on them were those to whom judgment was given. Also I saw the souls of those who had been beheaded because of their testimony to Jesus and because of the word of God, and who had not worshipped the beast or his image and had not received its mark on their foreheads or their hands. They came to life, and reigned with Christ a thousand years.
2 Corinthians 12:21
I am afraid that when I come again my God will humble me before you, and I will have to mourn over many of those who sinned before and have not repented of the impurity, immorality, and lewdness which they have practiced.
Ephesians 4:30
And do not grieve the Holy Spirit of God, in whom you were sealed for the day of redemption.
2 Peter 2:8-9
(for by what he saw and heard that righteous man, while living among them, felt his righteous soul tormented day after day by their lawless deeds),
Revelation 13:6-7
And he opened his mouth in blasphemies against God, to blaspheme his name and his dwelling, that is, those who dwell in heaven.