'Testimony' in the Bible

And Jesus saith to him, 'See, thou mayest tell no one, but go, thyself shew to the priest, and bring the gift that Moses commanded for a testimony to them.'

and before governors and kings ye shall be brought for my sake, for a testimony to them and to the nations.

and this good news of the reign shall be proclaimed in all the world, for a testimony to all the nations; and then shall the end arrive.