John Gills Exposition of the Bible Commentary - Exodus 25:16
And thou shall put into the ark the testimony that I shall give thee. Which was the principal use of it: by the "testimony" is meant the law, written on two tables of stone; so called, because it was a testification of the mind and will of God, what he would have done or omitted; and as the Israelites had declared their approbation of it, and assent unto it, and had promised obedience to it, therefore, should they transgress it, it would be a testimony against them: now this was put into the... read more
Matthew Henry's Complete Commentary - Exodus 25:10-22
The first thing which is here ordered to be made is the ark with its appurtenances, the furniture of the most holy place, and the special token of God's presence, for which the tabernacle was erected to be the receptacle. I. The ark itself was a chest, or coffer, in which the two tables of the law, written with the finger of God, were to be honourably deposited, and carefully kept. The dimensions of it are exactly ordered; if the Jewish cubit was, as some learned men compute, three inches... read more