The tabernacle of testimony — So called here, and Exodus 38:21, because it was made chiefly for the sake of the ark of the testimony, which is often called the testimony.
Related Commentaries of Numbers 1:50
Numbers 1:50
50 But thou shalt appoint the Levites over the tabernacle of testimony, and over all the vessels thereof, and over all things that belong to it: they shall bear the tabernacle, and all the vessels thereof; and they shall minister unto it, and shall encamp round about the tabernacle.