It is a double edged sword. The same thing that can deduce, analyze and perceive things can imprison you in disillusion and undesired feelings. It is all in how it is used
Sin kills, ...conscience is an alarm when things go wrong... to warn us. ( No use putting in ear plugs when your alarm goes off.) The Blood of God, can purify and cleanse... and sinners (like you and me) can plunge into that fountain... and be washed clean. Sin cost God's own blood, no wonder we have a conscience to help us...