Philippians 4:7

Peace in the heart will follow praying about what concerns us. The phrase "the peace of God" occurs nowhere else in the New Testament. This is peace that comes from God rather than peace with God. It is a peace that comes to us when we pray because we enter into the tranquility of God’s own presence. Those doing the praying are believers. This peace, or release from tension, is something that we cannot fully comprehend. Nevertheless this peace acts as a sentry to guard the believer’s heart (affections) and mind (thoughts) under the sovereign influence of Christ Jesus.

"Together these words refer to the entire inner being of the Christian, his emotions, affections, thoughts and moral choices. This inner part of a person, then, so vulnerable to attack by the enemy, is that which God’s peace is set, like battle-ready soldiers, to protect." [Note: Hawthorne, p. 185.]

Most of us have experienced lack of complete peace from time to time when we pray. Paul was not saying that we will feel absolutely at ease and relieved after we pray as he directed here. Still a measure of peace will be ours. At least we will have the confidence that we have laid the matter before the Lord and sought His aid.

This verse does not promise peace as the indicator of God’s will when we are praying about what we should do. Paul did not say that if we need to make a decision God will make His will known to us by giving us peace about the right choice. The promise of this verse is that if we pray rather than worry (Philippians 4:6) God will give us peace. Anxiety brings no peace, but praying does.