'Testify' in the Bible

And now hearken unto their voice; only, testify solemnly unto them, and declare unto them the manner of the king that shall reign over them.

Here I am. Testify against me in the LORD's presence and before his anointed. Whose ox have I taken, or whose donkey have I taken? Who have I cheated? Who have I oppressed? Who bribed me to look the other way? I'll restore it to you."