John 3:33
He who has received his testimony has set a seal that God is true.
John 6:27
Work not for the food that perishes, but for the food that endures to eternal life, which the Son of man will give to you, for God the Father put a seal on this man.
Romans 3:3-4
For what if some did not believe? Will their unbelief make the assurance of God ineffective?
Romans 4:18-21
Who, against hope, believed in hope, in order for him to become father of many nations according to that which was spoken, So thy seed will be.
2 Corinthians 1:18
But God is faithful, because our word toward you became not, yes and no.
2 Corinthians 1:22
He also is who put a seal on us, and who gave the pledge of the Spirit in our hearts.
Ephesians 1:13
In whom ye also, having heard the word of the truth, the good-news of your salvation, in whom also having believed, ye were sealed with the Holy Spirit of the promise,
Titus 1:1-2
Paul, a bondman of God and an apostle of Jesus Christ, according to the faith of the chosen of God, and the knowledge of truth according to piety,
Hebrews 6:17
By which God, wanting to demonstrate more abundantly to the heirs of the promise the immutableness of his resolve, confirmed it by an oath.
1 John 5:9-10
If we accept the testimony of men, the testimony of God is greater. Because this is the testimony of God that he has testified about his Son.
Revelation 7:3-8
saying, Do not harm the earth, nor the sea, nor the trees, until we may seal the bondmen of our God on their foreheads.