John Trapp on Matthew 15:13

Verse 13. Every plant which my heavenly Father hath not planted] viz. By election, and watered by vocation. These Pharisees were reprobates, designed to detection here, and to destruction hereafter. Therefore as it is no wonder, so it is no matter, though they stumble at the Word, being disobedient, sith hereunto they were appointed, 1 Pet. 2. 8. Let them stumble and fall, and be broken, and snared, and taken, Isa 8. 15. Christ is to reprobates a rock of offence: but such a rock as that, Judg. 6. 21. out of which goeth fire and consumeth them.