It is true, faith without works justifies us before God (Rom 3:28; 4:5): yet that faith that is alone, will be found to leave us sinners in the sight both of God and man (James 2:18). And though thou addest nothing to that which saveth thee by what thou canst do, yet thy righteousness may profit the son of man; as also saith the text: but if thou shalt be so careless as to say, What care I for being righteous to profit others? I tell thee, that the love of God is not in thee (Job 35:8; 1 John 3:17; 1 Cor 13:1-3). Walk therefore in God's ways, and do them, for this is your wisdom and your understanding in the sight of the nations, which shall hear of all these statutes, and say, 'This great nation is a wise and understanding people' (Deu 4:6).
THIRD. Observe. Every believer should not only take heed that his works be good, and so for the present do them, but should carefully study to maintain them; that is, to keep in a continual exercise of them.
It is an easier matter to begin to do good, than it is to continue therein; and the reason is, there is not so much of a Christian's cross in the beginning of a work, as there is in a continual, hearty, conscientious practice thereof. Therefore Christians have need, as to be pressed to do good, so to continue the work. Man, by nature, is rather a hearer than a doer, Athenian like, continually listening after some new thing; seeing many things, but observing nothing (Acts 17:20; Isa 42:20). It is observable, that after Christ had divided his hearers into four parts, he condemned three of them for fruitless hearers (Luke 8:5-8). O it is hard continuing believing, continuing loving, continuing resisting all that opposeth; we are subject to be weary of well-doing (Gal 6:9). To pluck out right eyes, to cut off right hands and feet, is no pleasant thing to flesh and blood; and yet none but these shall have the promise of life; because none but these will be found to have the effectual work of God's grace in their souls (Matt 18:8, 9): 'If ye continue in my word, then are you my disciples' INDEED (Matt 24:13; John 8:31). And hence it is, that you find so many IFS in the Scripture about men's happiness; as, 'if children, then heirs;' and 'if ye continue in the faith;' and 'if we hold the beginning of our confidence steadfast unto the end' (Rom 8:17; Col 1:23; Heb 3:14). Not that their continuing in the way of God is the cause of the work being right; but the work being right causeth the continuance therein. As John saith in another place, 'They went out from us, but they were not of us; for if they had been of us, [saith he] they would, no doubt, have continued with us' (1 John 2:19). But I say, where the work of God indeed is savingly begun, even there is flesh, corruption, and the body of death to oppose it. Therefore should Christians take heed, and look that against these opposites they maintain a continual course of good works among men.
Besides, as there is that in our own bowels that opposeth goodness, so there is the tempter, the wicked one, both to animate these lusts, and to join with them in every assault against every appearance of God in our souls. And hence it is, that he is called the devil, the enemy, the destroyer, and him that seeks continually to devour us (1 Peter 5:8), I need say no more but this. He that will walk like a Christian indeed, as he shall find it is requisite that he continue in good works, so his continuing therein will be opposed; if therefore he will continue therein, he must make it his business to study how to oppose those that oppose such a life, that he may continue therein.
FOURTH. Now then to help in this, here fitly comes in the last observation, to wit, That the best way both to provoke ourselves and others to good works, it is to be often affirming to others the doctrine of justification by grace, and to believe it ourselves. 'This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God, might be careful to maintain good works' (Titus 3:8).
I told you before, that good works must flow from faith: and now I tell you, that the best way to be fruitful in them, is to be much in the exercise of the doctrine of justification by grace; and they both agree; for as faith animates to good works, so the doctrine of grace animates faith. Wherefore, the way to be rich in good works, it is to be rich in faith; and the way to be rich in faith is to be conscientiously affirming the doctrine of grace to others, and believing it ourselves.
First, To be constantly affirming it to others. Thus Paul tells Timothy, that if he put the brethren in mind of the truths of the gospel, he himself should not only be a good minister of Christ, but should be nourished up in the words of faith and of good doctrine (1 Tim 4:6). It is the ordinance of God, that Christians should be often asserting the things of God each to others; and that by their so doing they should edify one another (Heb 10:24, 25;1 Thess 5:11).
The doctrine of the gospel is like the dew and the small rain that distilleth upon the tender grass, wherewith it doth flourish, and is kept green (Deu 32:2). Christians are like the several flowers in a garden, that have upon each of them the dew of heaven, which being shaken with the wind, they let fall their dew at each other's roots, whereby they are jointly nourished, and become nourishers of one another. For Christians to commune savourly of God's matters one with another, it is as if they opened to each other's nostrils boxes of perfume.19 Saith Paul to the church at Rome, 'I long to see you, that I may impart unto you some spiritual gift, to the end ye may be established; that is, that I may be comforted together with you, by the mutual faith both of you and me' (Rom 1:11, 12). Christians should be often affirming the doctrine of grace, and justification by it, one to another.
Second, As they should be thus doing, so they should live in the power of it themselves; they should by faith suck and drink in this doctrine, as the good ground receiveth the rain; which being done, forthwith there is proclaimed good works. Paul to the Colossians saith thus, 'We give thanks to God and the Father of our Lord Jesus Christ, praying always for you, since we heard of your faith in Christ Jesus, and love to all the saints; for the hope which is laid up for you in heaven, whereof ye heard before in the word of the truth of the gospel, which is come unto you, as it is in all the world, and bringeth forth fruit, as it doth also in you.' But how long ago? Why, 'since the day ye heard it, [saith he,] and knew the grace of God in truth' (Col 1:3-6).
Apples and flowers are not made by the gardener; but are an effect of the planting and watering. Plant in the sinner good doctrine, and let it be watered with the word of grace; and as the effect of that, there is the fruits of holiness, and the end everlasting life (Rom 6:22).