'Testimony' in the Bible

And He ordered him to tell no one, “But go and show yourself to the priest and make an offering for your cleansing, just as Moses commanded, as a testimony to them.”

And as for those who do not receive you, as you go out from that city, shake the dust off your feet as a testimony against them.”

It will lead to an opportunity for your testimony.

Then they said, “What further need do we have of testimony? For we have heard it ourselves from His own mouth.”