A number of years ago, Thomas Manton taught me a very helpful little triad on the topic of faith. He wrote, “we are justified by faith, we live by faith, we walk by faith” (13:15). This simple statement was very helpful to a man with such a narrow view of faith that I thought of “faith” primarily in reference to initial saving faith or in reference to the weighty doctrinal content of “the faith.” Both are true. But like lungs forcing air into a deflated pool toy, Manton stretched my brain and heart to see the awesome reality now reinforced through my life in Sovereign Grace Ministries—faith has everything to do with daily life. The life I now live, I live by faith in the Son of God, who loved me and gave himself for me (Galatians 2:20). And it led me to realize that even those with genuine saving faith often struggle with unbelief (Mark 9:24, 16:14).

Manton convinced me of the importance of walking by faith by revealing the fruit that grows from a life of faith. He taught me that it is a life of faith that produces sincerity in the soul, vigor in the affections, watchfulness over the heart, self-denial of sinful compulsions, comfort in affliction, and confidence through our pilgrimage in this life. And I realized this life of faith impacts and influences my entire day, from the moment I awake until I fall asleep at night.

This is what I learned from Manton’s sermon on 2 Cor. 5:7: “for we walk by faith, not by sight” …

“Those who have faith must walk by it; for faith is here considered as working and putting forth itself. We walk, that is, we live, for in the dialect of the Hebrews this life is a walk; vitam nostram componimus, we must govern and direct our lives by the power and influence of faith. It is not enough to have faith, but we must walk by it; our whole conversation is carried on and influenced by faith, and by the Spirit of God on Christ’s part: Gal. 2:20, ‘I live by the faith of the Son of God ;’ a lively faith. There living by faith is spoken of as it respecteth the principle of the spiritual life; here walking by faith as the scope and end of it: there, as we derive virtue from Christ; here, as we press on to heaven, in the practice of holiness. In short, walking noteth a progress, and passing on from one place to another, through a straight and beaten way which lieth between both. So we pass on from the earthly state to the heavenly by the power and influence of our way; our way is through all conditions we are appointed unto, and through all duties required of us. …

Reasons—

1. Walking by faith maketh a man sincere, because he expecteth his reward from God only, though no man observe him, no man commend him: Mat. 6:6, ‘Thy Father which seeth in secret shall reward thee openly.’ Yea, though all men hate him and condemn him: Mat 5:11-12, ‘Blessed are you when men shall revile and persecute you, and say all manner of evil against you falsely, for my name’s sake; rejoice, and be exceeding glad, for great is your reward in heaven.’ Now this is true sincerity, when we make God alone our paymaster, and count his rewards enough to repair our losses and repay our cost.

2. It maketh a man vigorous and lively. When we consider at the end of our work there is a life of endless joys to be possessed in heaven with God, that we shall never repent of the labour and pain that we have taken in the spiritual life: 1 Cor. 15:58, ‘Always abounding in the work of the Lord, knowing that your labour shall not be in vain in the Lord;’ Phil. 3:14, ‘I press towards the mark, because of the high prize of the calling of God in Jesus Christ.’ The thoughts of the prize and worth of the reward do add spirits to the runner.

3. It maketh a man watchful, that he be not corrupted with the delights of sense, which are apt to call back our thoughts, to interrupt our affections, to divert us from our work, and quench our zeal. Now one that walks by faith can compare his eternal happiness with these transitory pleasures which will soon have an end, and everlastingly forsake those miserable souls who were deluded by them. As Moses: Heb. 11:24-25, ‘By faith Moses, when he was come to years, refused to be called the son of Pharaoh’s daughter, choosing rather to suffer affliction with the people of God, than to enjoy the pleasures of sin for a season.’

4. Walking by faith will make a man self-denying; for, having heaven in his eye, he knoweth that he cannot be a loser by God: Mark 10:21, ‘ Forsake all that thou hast, and thou shalt have treasure in heaven;’ so verses 29, 30, ‘Verily I say unto you, There is no man that hath left house, or brethren, or sister, or father, or mother, or children, or lands, for my name’s sake, but he shall receive an hundred-fold.’

5. Walking by faith maketh a man comfortable and confident; a believer is encouraged in all his duty, emboldened in his conflicts, comforted in all his sufferings. The quieting or emboldening of the soul is the great work of faith, or trust in God’s fidelity. A promise to him is more than all the visible things on earth, or sensible objects in the world; it can do more with him to make him forsake all earthly pleasures, possessions, and hopes : Ps. 56:4, ‘In God I will praise his word, in God I have put my trust; I will not fear what flesh can do unto me;’ so Paul: Acts 20:24, ‘But none of those things move me, neither count I my life dear unto me, so I may fulfill my course with joy. Save the Holy Ghost witnesseth in every city, saying that bonds and afflictions abide me’—did wait for him everywhere. I make no reckoning of these things. It maketh us constant. Have ye fixed upon these hopes with so great deliberation, and will you drawback, and slack in the prosecution of them? Have you gone so far in the way to heaven, and do you begin to look behind you, as if you were about to change your mind, Heb. 10:39. The apostle saith, Phil. 3:13, ‘I forget the things which are behind, reaching forth unto the things which are before.’ The world and the flesh are things behind us; we turned our backs upon them when we first looked after heavenly things.

Use, Is to show the advantage the people of God have above the carnal and unregenerate. The people of God walk by faith, against the present want of sight. How do the world walk? Not by faith, they have it not; nor by the sight of heaven, for they are not there, and so continuing never shall be there. So they have neither faith nor sight; what do they live by, then? They live by sense and by fancy: by sense as to the present world; and they live by fancy and vain conceit as to the world to come. Live in their sins and vain pleasures, and yet hope to be saved. Here they walk by sight, but not such a sight as the apostle meaneth; they must have something in the view of sense—lands, honours, pleasures; and when these are out of sight, they are in darkness, and have nothing to live upon. But now a Christian is never at a loss, let his condition be what it will. Suppose God should bring him so low and bare that he hath no estate to live on, no house to dwell in, yet he hath an inheritance in the promises: Ps. 119:111, ‘Thy testimonies I have taken for an heritage for ever;’ and ‘God is his habitation,’ Ps. 90:1. A full heap in his own keeping is not such a supply to him as God’s all-sufficiency, Gen. 17:11. That is his storehouse. But his great happiness is in the other world; there is all his hope and his desire, and he looketh upon other promises only in order to that.”

-Thomas Manton, Sermons Upon 2 Corinthians V.: Sermon X. (SGCB), Works 13:20-22.