John Trapp on Hebrews 12:17-18

Verſe 17. He was rejected] Or, Repulſed. For Iſaac, [non-Latin text not transcribed] when he ſaw that he had done unwilling juſtice in bleſſing Jacob, he durſt not reverſe the bleſſing: for he feared an exceeding great fear, Gen. 27.33. Neither naturall affection, nor Eſau's importunity could make him repent and repeal what he had done.

Though he ſought is carefully with tears] Tears they were of diſcontent, for he cries, and at ſame time threatens his brother Jacob. Some weep for ſin, ſome for miſery, ſome for joy, ſome for compaſſion, ſome for revenge and in hypocriſie, as Eſau here, who rued his deed, but repented not his ſin.

Vetſe 18. For ye are not come, &c.] q. d. You are not under the law, but under grace: beware therefore of prophaneneſſe and licentiouſneſſe. For think you that God hath hired you to be wicked? Are you delivered to do all theſe abominations? Jer. 7.10. Ought you not to walk Goſpel-high, Phil. 1.27? Will not the Angel (Chriſt) that goeth along with you, deſtroy you after that he hath done you good, if ye turn not and repent according to the rules of his Law, the Goſpel? Exodus 33.2, 3, 4, &c.