It has been said that justification by faith alone is the doctrine on which the church stands or falls; on reformation day we discover the “rediscovery” (in a Christopher Columbus sense) of this doctrine. So on this Reformation I give you an awesome quote from the reformer Zacharias Ursinus:
“The righteousness with which we are here justified before God, is not our conformity with the law, not our good works, nor our faith; but it is the satisfaction which Christ rendered to the law in our stead; or the punishment which he endured on our behalf; and therefore the entire humiliation of Christ…whatever he did…is all included in the satisfaction which he made for us, and in the righteousness which God graciously imputes to us, and all believers.”

“How can man, being a sinner, be just before God?…Man as a sinner can be regarded as righteous only on the ground of the imputation of Christ’s merits; and this is the question of which we speak when treating the subject of justification.”
Zacharias Ursinus would like to say:
Happy Reformation Day!