John 3:33

He having received his testimony has fixed a seal that God is true.

John 6:27

Work not for food perishing, but food remaining to eternal life, which the Son of man will give you: for him God the Father sealed.

Romans 3:3-4

For what if some disbelieved? their unbelief will not leave inactive the faith of God.

Romans 4:18-21

Who against hope believed upon hope, for him to become father of many nations, according to that said, So shall thy seed be.

2 Corinthians 1:18

And God faithful, for our word to you was not yea or nay.

2 Corinthians 1:22

Who also having sealed us, and given the pledge of the Spirit in our hearts.

Ephesians 1:13

In whom ye also, having heard the word of truth, the good news of your salvation: in whom also having believed, ye were sealed by the holy Spirit of solemn promise,

Titus 1:1-2

Paul, servant of God, and sent of Jesus Christ, according to the faith of the chosen of God, and the acknowledgment of the truth according to devotion;

Hebrews 6:17

In which God, willing more abundantly to show to the heirs of the promise the firmness of his counsel, he intervened by an oath:

1 John 5:9-10

If we receive the testimony of men, the testimony of God is greater: for this is the testimony of God which he has testified concerning his Son.

Revelation 7:3-8

Saying, Injure not the earth, neither the sea, neither the trees, until we should seal the servants of God upon their foreheads.

Treasury of Scripture Knowledge

Summary

He that hath received his testimony hath set to his seal that God is true.

Bible References

Hath set

Romans 3:3
For what if some disbelieved? their unbelief will not leave inactive the faith of God.
Romans 4:18
Who against hope believed upon hope, for him to become father of many nations, according to that said, So shall thy seed be.
2 Corinthians 1:18
And God faithful, for our word to you was not yea or nay.
Titus 1:1
Paul, servant of God, and sent of Jesus Christ, according to the faith of the chosen of God, and the acknowledgment of the truth according to devotion;
Hebrews 6:17
In which God, willing more abundantly to show to the heirs of the promise the firmness of his counsel, he intervened by an oath:
1 John 5:9
If we receive the testimony of men, the testimony of God is greater: for this is the testimony of God which he has testified concerning his Son.