The depth of sin.

     He who would know holiness must understand sin: and he who would see sin as God sees it, and think of it as God does, must look at the cross and grave of the Son of God, and must know the meaning of Gethsemane and Golgotha.
Horatius Bonar (2010-04-14). God's Way of Holiness (Kindle Locations 203-205). Unknown. Kindle Edition.

     Sin is no small matter. Sin is not merely a mistake, or something that cannot be helped. It cannot be excused by "I was born that way", or worse yet, "God made me that way, and God don't make junk".
     The mind set on the flesh, is hostile to God. It does not submit to Him or His ways (Romans 8:5-8). The sin nature is in actuality, rebellion against God.
     The cross demonstrates God's love for a sinning world. It also shows us the ugliness of sin, the depth of man's depravity. It shows us that a holy and just God cannot tolerate sin. Jesus suffered and died that we may truly live. We are called to holiness, pure hearts and clean hands!