How do we keep from becoming desensitized to sin?

How do we keep from becoming desensitized to sin?
We can do so by seeking with all of our hearts and minds the truth that God has provided. This means reading, studying, and meditating deeply upon God's Holy Word, the Bible. This should be done with much prayer, always seeking God's will for our lives. A good Scripture for us in this regard is:
"Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth" (2 Tim. 2:15).
"Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report, if there be any virtue, and if there be any praise, think on these things. Those things, which ye have both learned and received, and heard, and seen in me, do; and the God of peace shall be with you" (Philippians 4:8-9).