John 3:33
The one who has accepted his testimony has confirmed clearly that God is truthful.
John 6:27
Do not work for the food that disappears, but for the food that remains to eternal life -- the food which the Son of Man will give to you. For God the Father has put his seal of approval on him."
Romans 3:3-4
What then? If some did not believe, does their unbelief nullify the faithfulness of God?
Romans 4:18-21
Against hope Abraham believed in hope with the result that he became the father of many nations according to the pronouncement, "so will your descendants be."
2 Corinthians 1:18
But as God is faithful, our message to you is not "Yes" and "No."
2 Corinthians 1:22
who also sealed us and gave us the Spirit in our hearts as a down payment.
Ephesians 1:13
And when you heard the word of truth (the gospel of your salvation) -- when you believed in Christ -- you were marked with the seal of the promised Holy Spirit,
Titus 1:1-2
From Paul, a slave of God and apostle of Jesus Christ, to further the faith of God's chosen ones and the knowledge of the truth that is in keeping with godliness,
Hebrews 6:17
In the same way God wanted to demonstrate more clearly to the heirs of the promise that his purpose was unchangeable, and so he intervened with an oath,
1 John 5:9-10
If we accept the testimony of men, the testimony of God is greater, because this is the testimony of God that he has testified concerning his Son.
Revelation 7:3-8
"Do not damage the earth or the sea or the trees until we have put a seal on the foreheads of the servants of our God."