But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.
Ver. 13. But exhort one another] A special preservative from apostasy. See my Common Place of Admonition, and my treatise onMalachi 3:17 .
Lest any of you be hardened] Continuance in sin hardeneth the heart, and gradually indisposeth it to the work of repentance. Qui non est hodie, &c. There is a deceitfulness in sin, a lie in vanity, John 2:8. Doctor Preston relateth of one in Cambridge, that had committed a great sin, and had this temptation upon him, Do the act again, and your conscience will trouble you no more. He did it again, and then he grew a very sot indeed and went on in his wickedness.