'Can Testify' in the Bible
You yourselves can testify that I said, ‘I am not the Messiah, but I’ve been sent ahead of Him.’
Then Pilate said to him, "So then you are a king!" Jesus replied, "You say that I am a king. For this [reason] I was born, and for this reason I have come into the world: in order that I can testify to the truth. Everyone who is of the truth hears my voice."
and killed the very source of life. But God raised him from the dead, as we can testify.
As for what he did in the land of the Jews and of Jerusalem, we can testify to that. They slew him by hanging him on a gibbet,
as the high priest and all the Council of the elders (Sanhedrin, Jewish High Court) can testify; because from them I received letters to the brothers, and I was on my way to Damascus in order to bring those [believers] who were there to Jerusalem in chains to be punished.
they can testify, if they will, that I early profess'd myself a Pharisee, a member of the most rigorous sect of our religion:
I can testify about them that they have zeal for God, but not according to knowledge.
For I can testify that to the utmost of their power, and even beyond their power, they have of their own free will given help.
Where is your self-congratulation? For I can testify that you would have torn out your very eyes, if you could, and have given them to me.
For I can testify on his behalf that he has a deep concern for you and for those in Laodicea and in Hierapolis.
For we were never found using flattering words at any time, as you know, nor did we try to cover up any greedy desires. God can testify [to this].
You can testify, [just] as God can, how holy, righteous and blameless our conduct was toward you believers.
We have seen for ourselves and can testify that the Father has sent his Son to be the Savior of the world.
Demetrius has received a good report from everyone, including the truth itself. We, too, can testify to this report, and you know that our testimony is true.