The Remedy for Unbelief – Hebrews 3:12-14

In like manner, are we not concerned that the members of the same body with us should be kept alive, kept from putrefying, from being cut off and burned before our eyes? Are we not concerned that an eye doth not go out, that an arm doth not wither, that a leg be not broken, yea, that a finger be not cut? If it be so, we are not ourselves members of the body. The like may be said of the evil that ensues on the sin of apostasy, which in this duty we labor to obviate and prevent. That which principally of this kind might be insisted on, is the troublesome, defiling infection wherewith apostasy in any is attended, which our apostle speaks unto, chap. 12:15. The failing of one is commonly the infection and defiling of many. There is a filthy leaven in apostasy, which if not carefully heeded may leaven the whole lump. Ofttimes also it springs from or is accompanied with some word of error that eats like a gangrene. – John Owen