John 3:33
He that hath received his testimony, hath set his seal to this, that God is true:
John 6:27
Labour not so much for the meat that perisheth, but rather for that food which endureth unto life eternal, which the Son of man will give you: for Him hath God the Father sealed.
Romans 3:3-4
For what if some did not believe? shall their incredulity make the faithfulness of God of no effect?
Romans 4:18-21
who against hope believed, with hope, that he should be the father of many nations, according to that which was said unto him, "So shall thy seed be."
2 Corinthians 1:18
But the faithful God, He knows, that our word to you was not yes and no.
2 Corinthians 1:22
and given us the earnest of the Spirit in our hearts.
Ephesians 1:13
In whom ye also trusted, when ye heard the word of truth, the gospel of your salvation: in whom also when ye believed, ye were sealed with the holy Spirit of promise,
Titus 1:1-2
Paul a servant of God, and an apostle of Jesus Christ, for promoting the faith of God's chosen people, and the knowledge of the truth which is according to godliness:
Hebrews 6:17
Wherefore God being willing more abundantly to manifest unto the heirs of the promise the immutability of his counsel, confirmed it with an oath:
1 John 5:9-10
Now if we admit the testimony of men, sure the testimony of God is greater: and this is the testimony of God, which He hath testified concerning his Son.
Revelation 7:3-8
saying, Hurt not the earth, nor the sea, nor the trees, till we have sealed the servants of our God on their foreheads.