Matthew 23:18 - Albert Barnes' Notes on the Bible

Bible Comments

The altar - The altar of burnt-offerings, in the court of the priests. See the notes at Matthew 21:12. It was made of brass, about 30 feet in length and breadth, and 15 feet in height, 2 Chronicles 4:1. On this altar were offered all the beasts and bloody oblations of the temple.

The gift that is upon it - The gift or offering made to God, so called because it was devoted or “given” to him. The gift upon this altar was always beasts and birds.

Matthew 23:18

18 And, Whosoever shall swear by the altar, it is nothing; but whosoever sweareth by the gift that is upon it, he is guilty.b