6:66-71 When we admit into our minds hard thoughts of the words and works of Jesus, we enter into temptation, which, if the Lord in mercy prevent not, will end in drawing back. The corrupt and wicked heart of man often makes that an occasion for offence, which is matter of the greatest comfort. Our Lord had, in the foregoing discourse, promised eternal life to his followers; the disciples fastened on that plain saying, and resolved to cleave to him, when others fastened on hard sayings, and forsook him. Christ's doctrine is the word of eternal life, therefore we must live and die by it. If we forsake Christ, we forsake our own mercies. They believed that this Jesus was the Messiah promised to their fathers, the Son of the living God. When we are tempted to backslide or turn away, it is good to remember first principles, and to keep to them. And let us ever remember our Lord's searching question; Shall we go away and forsake our Redeemer? To whom can we go? He alone can give salvation by the forgiveness of sins. And this alone brings confidence, comfort, and joy, and bids fear and despondency flee away. It gains the only solid happiness in this world, and opens a way to the happiness of the next.

69. And we believe,—(See on [1797]Mt 16:16). Peter seems to have added this not merely—probably not so much—as an assurance to his Lord of his heart's belief in Him, as for the purpose of fortifying himself and his faithful brethren against that recoil from his Lord's harsh statements which he was probably struggling against with difficulty at that moment. Note.—There are seasons when one's faith is tried to the utmost, particularly by speculative difficulties; the spiritual eye then swims, and all truth seems ready to depart from us. At such seasons, a clear perception that to abandon the faith of Christ is to face black desolation, ruin and death; and on recoiling from this, to be able to fall back, not merely on first principles and immovable foundations, but on personal experience of a Living Lord in whom all truth is wrapt up and made flesh for our very benefit—this is a relief unspeakable. Under that blessed Wing taking shelter, until we are again fit to grapple with the questions that have staggered us, we at length either find our way through them, or attain to a calm satisfaction in the discovery that they lie beyond the limits of present apprehension.