'Testimony' in the Bible

and put the incense on the fire [in the censer] before the Lord, so that the cloud of the incense may cover the mercy seat that is on [the ark of] the Testimony, otherwise he will die.

You shall not go around as a gossip among your people, and you are not to act against the life of your neighbor [with slander or false testimony]; I am the Lord.

Outside the veil of the Testimony [between the Holy Place and the Most Holy Place] in the Tent of Meeting, Aaron shall always keep the lamps burning before the Lord from evening until morning; it shall be a permanent statute throughout your generations.