John 3:33
He that hath received his testimony, hath set to his seal, that God is true.
John 6:27
Labour not for the meat which perisheth, but for that which endureth to everlasting life, which the Son of man will give you; for him hath God the Father sealed.
Romans 3:3-4
For what if some believed not? Shall their unbelief disannul the faithfulness of God?
Romans 4:18-21
Who against hope believed in hope, that he should be the father of many nations, according to that which was spoken, So shall thy seed be.
2 Corinthians 1:18
As God is faithful, our word to you hath not been yea and nay.
2 Corinthians 1:22
Who hath also sealed us, and given us the earnest of the Spirit in our hearts.
Ephesians 1:13
In whom ye likewise believed, after ye had heard the word of truth, the gospel of your salvation; in whom having believed, ye were also sealed by that Holy Spirit of promise,
Titus 1:1-2
Paul a servant of God, and an Apostle of Jesus Christ, in things concerning the faith of God's elect, and the knowledge of the truth which is after godliness,
Hebrews 6:17
Wherefore God being willing to shew more abundantly to the heirs of the promise the unchangeableness of his counsel, interposed by an oath:
1 John 5:9-10
If we receive the testimony of men, the testimony of God is greater; and this is the testimony of God, which he hath testified of his Son.
Revelation 7:3-8
Saying, Hurt ye not the earth, neither the sea, neither the trees, till we seal the servants of our God on their foreheads.