Christian, take 4 minutes to remember the treasure of received righteousness and taste the sweetness of the Gospel!
Here is Martin Luther’s preface to Galatians (adapted and paraphrased by Keller).
While we live here on earth, we will be accused, exercised with temptations, oppressed with heaviness and sorrow, and bruised by the law with its demands of active righteousness. Because of this, Paul sets out in this letter of Galatians to teach us, to comfort us, and to keep us constantly aware of this Christian righteousness. For if the truth of being justified by Christ alone (not by our works) is lost, then all Christian truths are lost. For there is no middle ground between Christian righteousness and works-righteousness. There is no other alternative to Christian righteousness but works-righteousness; if you do not build your confidence on the work of Christ, you must build your confidence on your own work. On this truth and only on this truth the church is built and has its being.
This distinction is easy to utter in words, but in use and experience it is very hard. So I challenge you to exercise yourselves continually in these matters through study, reading, meditation on the Word and prayer, so that in the time of trial you will be able to both inform and comfort both your consciences and others, to bring them from law to grace, from active/works-righteousness to passive/Christ’s righteousness. In times of struggle, the devil will seek to terrify us by using against us our past record and the wrath and law of God. So if we cannot see the differences between the two kinds of righteousness, and if we do not take hold of Christ by faith, sitting at the right hand of God (Heb 7:25) and pleading our case as sinners to the Father, then we are under the law, not under grace. Christ is no savior, but a lawgiver, and no longer our salvation, but an eternal despair.
So, learn to “speak the Gospel” to one’s heart. For example, when the law creeps into your conscience, learn to be a cunning logician—learn to use arguments of the Gospel against it. Say:
O law! You would climb up into the kingdom of my conscience, and there reign and condemn me for sin, and would take from me the joy of my heart which I have by faith in Christ, and drive me to desperation, that I might be without hope. You have overstepped your bounds. Know your place! You are a guide for my behavior, but you are not Savior and Lord of my heart. For I am baptized, and through the Gospel am called to receive righteousness and eternal life...So trouble me not! For I will not allow you, so intolerable a tyrant and tormentor, to reign in my heart and conscience—for they are the seat and temple of Christ the Son of God, who is the king of righteousness and peace, and my most sweet savior and mediator. He shall keep my conscience joyful and quiet in the sound and pure doctrine of the Gospel, through the knowledge of this passive and heavenly righteousness.
When we are assured of this righteousness, we not only cheerfully work well in our vocations, but we submit to all manner of burdens and dangers in this present life, because we know that this is the will of God, and that this obedience pleases him. This then is the argument of this Epistle, which Paul expounds against the false teachers who had darkened the Galatians’ understanding of this righteousness by faith.