“Yea, sin is indeed always in us, and the godly do feel it, but it is covered, and is not imputed unto us of God for Christ’s sake; whom because we do apprehend by faith, all our sins are now no sins. But where Christ and faith be not, there is no remission or covering of sins, but mere imputation of sins and condemnation. Thus will God glorify his Son, and will be glorified himself in us through him.
When we have thus taught faith in Christ, then do we teach also good works. Because thou hast laid hold upon Christ by faith, though whom thou art made righteous, begin now to work well. Love God and thy neighbor, call upon God, give thanks unto him, praise him, confess him. Do good to thy neighbor and serve him: fulfill thine office. These are good works indeed, which flow out of this faith, and this cheerfulness conceived in the heart, for that we have remission of sins freely by Christ.
Now what cross or affliction soever do afterwards ensue, they are easily borne, and cheerfully suffered. For the yoke that Christ layeth upon us, is sweet, and his burden is light [Matt. 11:30]. When sin is pardoned, and the conscience delivered from the burden and sting of sin, then may a Christian bear all things easily: because he feeleth all things within sweet and comfortable, therefore he doeth and suffereth all things willingly. But when a man walketh in his own righteousness, whatsoever he doeth is grievous and tedious unto him, because he doeth it unwillingly.” Martin Luther