We should pray because we are in a fierce battle. Constantly we are warned of the Devil's intention to neutralize and demoralize us. We are in a battle and we need the help of God. The enemy has marshaled his armies . If He did not feel He could face the battle in His own strength .
Prayer is a deterrent to sin in our lives.
In the quiet times of private, honest prayer God exposes the rationalizations and the excuses that we use to cater to sin. In prayer God holds a mirror up to our lives so we can see the way we really are. . .and repent. Prayer makes a difference. Diseases are sometimes healed, strength is imparted, guidance is given, hearts are softened, needs are met. I know that when I pray for others it helps them.