As sons of Adam we have his sin. We don’t need to learn sin. As one of our poets, Lady Gaga, has said better than she knows, we are born this way. Being born this way, where every intention of the thoughts of our hearts is only evil continually, is not an excuse for sin, like the pseudo Lady intended, but it is the reason we need a savior from sin.
When God saves us He doesn’t just pull up the weeds. He brings in new soil. Because He died and rose again He both forgives us and makes us different.
In 1 John 1:9 God forgives our sins, a plural noun, and cleanses us from all unrighteousness, or “wrongdoing,” which is singular. The plural refers to the acts of active and passive rebellion. There are many weeds to deal with.
But the singular unrighteousness refers to our nature. He is cleansing the soil, treating it so that less weeds and moss will grow. He really is making us different people, and this internal work must be done otherwise we can only ever deal with the surface.
When we eat and drink at the Lord’s Table we do it in remembrance of Him. We remember Christ’s obedience, His love, His death and resurrection. We also should remember His aim, to save and sanctify a people for His own possession. As Christians, we have been crucified with Christ, we no longer live. When we remember what He has done, we remember that we also died and rose again in Him by faith.