“When God is here spoken of as hardening some of the children of men, it is not to be understood that God by any positive efficiency hardens any man's heart. There is no positive act in God, as though he put forth any power to harden the heart. To suppose any such thing would be to make God the immediate author of sin. God is said to harden men in two ways: by withholding the powerful influences of his Spirit, without which their hearts will remain hardened, and grow harder and harder; in this sense he hardens them, as he leaves them to hardness. And again, by ordering those things in his providence which, through the abuse of their corruption, become the occasion of their hardening. Thus God sends his word and ordinances to men which, by their abuse, prove an occasion of their hardening.”

“The slave is not afflicted with a punishment greater than the hardening of the heart and being distant from Allah. For the Fire was created to melt the hardened heart. The most distant heart from Allah is the heart which is hardened. If the heart becomes hardened, the eye becomes dry.”

“No man will say, "There is no God" 'till he is so hardened in sin that it hasbecome his interest that there should be none to call him to account.”

“But saints and angels behold that glory of God which consists in the beauty of His holiness; and it is this sight only that will melt and humble the hearts of men, wean them from the world, draw them to God, and effectually change them. A sight of the awful greatness of God may overpower men's strength, and be more than they can endure; but if the moral beauty of God be hid, the enmity of the heart will remain in its full strength. No love will be enkindled; the will, instead of being effectually gained, will remain inflexible. But the first glimpse of the moral and spiritual glory of God shining into the heart produces all these effects as it were with omnipotent power, which nothing can withstand.”

“We should get into the way of appearing lively in religion, more by being lively in the service of God and our generation than by the liveliness and forwardness of our tongues, and making a business of proclaiming on the house tops with our mouths the holy and eminent acts and exercises of our own hearts. Christians that are intimate friends would talk together of their experiences and comforts in a manner better becoming Christian humility and modesty, and more to each other's profit: their tongues not running before, but rather going behind their hands and feet, after the prudent example of the blessed apostle, 2 Cor. xii. 6. Many occasions of spiritual pride would thus be cut off, and so a great door shut against the devil. A great many of the main stumbling-blocks against experimental and powerful religion would be removed, and religion would be declared and manifested in such a way that, instead of hardening spectators, and exceedingly promoting infidelity and atheism, it would, above all things, tend to convince men that there is a reality in religion, and greatly awaken them, and win them, by convincing their consciences of the importance and excellency of religion. Thus the light of professors would so shine before men, that others, seeing their good works, would glorify their Father which is in heaven.”

“For when God is said by these things to try men and prove them, to see what is in their hearts and whether they will keep His commandments or no, we are not to understand, that it is for His own information, or that He may obtain evidence Himself of their sincerity (for he needs no trials for His information); but chiefly for their conviction, and to exhibit evidence to their consciences...So when God tempted or tried Abraham with that difficult command of offering up his son, it was not for His satisfaction, whether he feared God or no, but for Abraham's own greater satisfaction and comfort, and the more clear manifestation of the favour of God to him.”

“Harden your heart.”