“Come now, and let us reason together, saith the Lord: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.” Isaiah 1:18
CHRIST IS THE REDEEMER OF SINNERS! It is for their salvation He came into the world. For this purpose He left heaven, took upon Himself humanity, and suffered the deepest pain and humiliation. It was for this He went to the cross to die the death of deaths. For this He sits in glory at the Father’s right hand in power. Over the conversion of sinners the angels that surround His throne rejoice. It is for the conversion of sinners that His providence is directed—determining the circumstances that shall fall out unto these for the purpose of bringing them to the end of themselves that they might trust in Him alone for their salvation. His marvellous grace has this as its end. It was grace that moved the Father to choose some before the foundation of the world to be partakers of the benefits of Christ’s atonement. It was grace that moved the Son to become Surety and Mediator for these chosen of the Father, and to purchase their redemption by His perfect obedience to the law and cruel death on the cross. It is by grace that the Spirit comes in power to accompany the Gospel to call these who were chosen by the Father and redeemed by the Son unto spiritual life.
Before sinners will come to Christ for salvation they must be made to see their sinfulness and inability to save themselves. Only those who see their danger of perishing under the curse of sin will see their need of Christ. Only those who are convicted of their lost condition will ever seek mercy from God through Christ. For the purpose of showing sinners their need of redemption, and to drive them to reason with God as they are invited to do in the invitation contained in our text, the responsibility of the creature is laid before us in the context. Listen to these words from verse 16 & 17: “Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil; learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.” The command here is far more than a call to outward reformation. God’s call in these verses is far deeper than to leave off certain sins that are outwardly committed by you. In these words the Lord is demanding of you perfection of nature, practice, and satisfaction to the demands of His justice. When He commands you to “make you clean,” it is a call to put away the original corruption of nature. When He calls you to “put away evil from before His eyes” it is a call to meet the holy requirements of His law—that He will not be able to behold any evil within you.