Then they understood that He was not telling them to beware of the leaven used in bread, but of the teaching of the Pharisees and Sadducees.
12. Then they understood. The word leaven is very evidently used by Christ as contrasted with the pure and uncorrupted word of God. In a former passage, (Matthew 13:33,) Christ had used the word in a good sense, when he said that the Gospel resembled leaven; See page 127 of this volume.
We have here Christ's discourse with his disciples concerning bread, in which, as in many other discourses, he speaks to them of spiritual things under a similitude, and they misunderstand him of carnal things. The occasion of it was, their forgetting to victual their ship, and to take along with them provisions for their family on the other side of the water; usually they carried...
Commenting on Matthew 16:5-12
Then understood they,.... Without any further explication of his sense and meaning, how that he bade them not beware of the leaven of bread: which sense they first took him in; imagining, because the Pharisees were very particular and precise what sort of leaven they made use of (z), that Christ forbad them buying bread that was made with leaven according to their directions: and...