3:10 Wherefore I was grieved with that generation, and said, They do alway {h} err in [their] heart; and they have not known my ways.
(h) They are brutish and angry.
3:10 Wherefore I was grieved. The Greek word prosochthizo more nearly means disgusted.
They do always err in [their] heart. Not simply by making mistakes, but their hearts are wrong.
3:10 Wherefore - To speak after the manner of men. I was grieved - Displeased, offended with that generation, and said, They always err in their hearts - They are led astray by their stubborn will and vile affections. And - For this reason, because wickedness has blinded their understanding. They have not known my ways - By which I would have led them like a flock. Into my rest - In the promised land.
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.