'Can Testify' in the Bible

You yourselves can testify that I said, 'I am not the Christ [i.e., God's specially chosen one] but [rather] that I was sent [by God] ahead of Him.'

For I can testify that they have an enthusiasm for God, but it is without [true] knowledge.

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.