3:12 {7} Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
(7) Now consider in the words of David, he shows first by this word today that we must not ignore the opportunity while we have it: for that word is not to be limited to David's time, but it encompasses all the time in which God calls us.
3:12 Take heed, brethren, etc. They fell from unbelief, which led them to depart from God. Take heed, lest you Hebrew Christians seeking the heavenly rest should so fall.
3:12 Take heed, lest there be in any of you - As there was in them. An evil heart of unbelief - Unbelief is the parent of all evil, and the very essence of unbelief lies in departing from God, as the living God - The fountain of all our life, holiness, happiness.
3:7-13 Days of temptation are often days of provocation. But to provoke God, when he is letting us see that we entirely depend and live upon him, is a provocation indeed. The hardening of the heart is the spring of all other sins. The sins of others, especially of our relations, should be warnings to us. All sin, especially sin committed by God's professing, privileged people, not only provokes God, but it grieves him. God is loth to destroy any in, or for their sin; he waits long to be gracious to them. But sin, long persisted in, will make God's wrath discover itself in destroying the impenitent; there is no resting under the wrath of God. Take heed: all who would get safe to heaven must look about them; if once we allow ourselves to distrust God, we may soon desert him. Let those that think they stand, take heed lest they fall. Since to-morrow is not ours, we must make the best improvement of this day. And there are none, even the strongest of the flock, who do not need help of other Christians. Neither are there any so low and despised, but the care of their standing in the faith, and of their safety, belongs to all. Sin has so many ways and colours, that we need more eyes than ours own. Sin appears fair, but is vile; it appears pleasant, but is destructive; it promises much, but performs nothing. The deceitfulness of sin hardens the soul; one sin allowed makes way for another; and every act of sin confirms the habit. Let every one beware of sin.
