It shall be an altar most holy, as appears from the following reason, because it was not only holy in itself, but by its touch communicated a legal holiness to other things. Whatsoever toucheth the altar shall be holy: this may be understood either,
1. Of persons, as a caution that none should touch the altar but holy and consecrated persons. Or rather,
2. Of things, yet not of all things, for polluted things were not made holy by the touch of holy things, which is affirmed, Haggai 2:12; but of things belonging to the altar Of offerings, which by God's appointment were to be offered, which were sanctified by being laid upon this altar, and therefore the altar was greater and more holy than the gift, as our blessed Saviour notes, Matthew 23:19.