The conscience should be both convicted by the word and convicted of the word. To illustrate both I will simply repeat Luther’s words that I shared last night.
I greatly longed to understand Paul’s Epistle to the Romans and nothing stood in the way but that one expression, “the justice of God,” because I took it to mean that justice whereby God is just and deals justly in punishing the unjust. My situation was that, although an impeccable monk, I stood before God as a sinner troubled in conscience, and I had no confidence that my merit would assuage him. Therefore I did not love a just and angry God, but rather hated and murmured against him. Yet I clung to the dear Paul and had a great yearning to know what he meant.
Night and day I pondered until I saw the connection between the justice of God and the statement that “the just shall live by his faith.” Then I grasped that the justice of God is that righteousness by which through grace and sheer mercy God justifies us through faith. Thereupon I felt myself to be reborn and to have gone through open door into paradise. The whole of Scripture took on a new meaning, and whereas before the “justice of God” had filled me with hate, now it became to me inexpressibly sweet in greater love. This passage of Paul became to me a gate to heaven….
If you have a true faith that Christ is your savior, then at once you have a gracious God, for faith leads you in and opens up God’s heart and will, that you should see pure grace and overflowing love. This it is to behold God in faith that you should look upon his fatherly, friendly heart, in which there is no anger or ungraciousness. He who sees God as angry does not see him rightly but looks only on a curtain, as if a dark cloud had been drawn across his face. – From Here I Stand by Roland Bainton
Afterwards on April 18, 1521 at the Diet of Worms when Luther was asked whether or not he would recant of the errors contained in his books he replied:
Since then Your Majesty and your lordships desire a simple reply, I will answer without horns and without teeth. Unless I am convicted by Scripture and plain reason – I do not accept the authority of popes and councils, for they have contradicted each other – my conscience is captive to the Word of God. I cannot and I will not recant anything, for to go against conscience is neither right nor safe. Here I stand, I cannot do otherwise. God help me. Amen. – From The Holiness of God by R.C. Sproul
No Other Boast 