John 3:33
He that has received his testimony has set to his seal that God is true.
John 6:27
Labour not for the food which perishes, but for the food which abides unto eternal life, which the Son of man shall give unto you, for him has God the Father sealed.
Romans 3:3-4
For what if some of them did not believe? Shall their unbelief have made the truth of God without effect?
Romans 4:18-21
Who believed to wait against all hope, that he might become the father of many Gentiles, according to that which had been spoken unto him, So shall thy seed be.
2 Corinthians 1:18
But God is faithful that our word toward you has not been yes and no.
2 Corinthians 1:22
who has also sealed us and given the earnest of the Spirit in our hearts.
Ephesians 1:13
In whom ye also trusted, hearing the word of truth, the gospel of your saving health; in whom also after ye believed, ye were sealed with that Holy Spirit of the promise,
Titus 1:1-2
Paul, slave of God, and apostle of Jesus Christ, according to the faith of God's elect and the knowledge of the truth which is according to godliness;
Hebrews 6:17
In which God, desiring to show more abundantly unto the heirs of promise the immutability of his counsel, confirmed it by an oath,
1 John 5:9-10
If we receive the witness of men, the witness of God is greater: for this is the witness of God which he has testified of his Son.
Revelation 7:3-8
saying, Hurt not the land neither the sea nor the trees until we have sealed the slaves of our God in their foreheads.