John 3:33
He that hath received his testimony hath set his seal that God is true.
John 6:27
Labor not for the food that perisheth, but for the food that endureth to everlasting life, which the Son of man giveth to you; for on him hath the Father set his seal, even God.
Romans 3:3-4
For what? If some were unfaithful, shall their unfaithfulness make God unfaithful?
Romans 4:18-21
For he had confident hope in that which was past hope, that he should become a father of many nations, according to that which was spoken, "Thus shall thy offspring be;"
2 Corinthians 1:18
But as God is faithful, our word to you is not yea and nay.
2 Corinthians 1:22
he who also sealed us, and gave the Spirit as a pledge in our hearts.
Ephesians 1:13
in whom ye also, after having heard the word of truth, the glad tidings of your salvation, in whom, I say, having also believed, ye were sealed with the Holy Spirit that was promised,
Titus 1:1-2
Paul, a servant of God, and an apostle of Christ Jesus, for the faith of Gods elect, and the knowledge of the truth which is according to godliness,
Hebrews 6:17
Wherefore God, wishing more abundantly to show to the heirs of the promise the immutability of his purpose, 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, that he hath borne witness 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.