'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.’

as both the high priest and the whole council of elders can testify about me. After I received letters from them to the brothers, I traveled to Damascus to bring those who were prisoners there to be punished in Jerusalem.

I can testify about them that they have zeal for God, but not according to knowledge.