Bede

David, however, placed these words in his heart, etc. The Lord saw in his wisdom the unbelieving and deceitful hearts of some of the Jews; and, as the Scripture customarily speaks of God in human manner, he feared so much from the face of the people who were his brothers by human communion of fragility, but were persecutors by the impiety of their conspiracy against the Lord, that to them he spoke his sacraments or warnings more in parables and riddles than in open light, lest he cast the holy to dogs and pearls to swine (Matt. VII). …

Commentary on Samuel ↗