But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, gentleness and self-control.
Galatians 5:22 (NKJV)
Peace is the third attribute of the fruit of the Spirit.
If you ever pray to God for peace, just remember you already have God's peace within you. This is due to the fact that His Spirit, who is also the Spirit of peace dwells in you. As a result, when you aren't at peace or are struggling in some way, learn to rest by faith that God will manifest His perfect peace.
The Greek word for peace is eirēnē which means to bind or join back what has been divided into wholeness. The Apostle Paul tells us God's peace surpasses all understanding (Philippians 4:7). This supernatural peace is much more than a warm gushing feeling; it is a profound confidence in God, regardless of what life throws at you.
Consider these words of the Apostle Paul:
And let the peace of God rule in your hearts.
Colossians 3:15 (NKJV)
Brabeuo is the Greek word for "rule," which means "to act as umpire, to make the call" (Strong's G1018). In Paul's time, an umpire or referee was known as a brabeus, and the person’s job was to arbitrate the game and ensure that all players followed the rules. If a player does not follow the rules, the brabeus will prevent him from playing because he is at odds with the game. Similarly, if you refuse to believe you already have God's peace within you, you will feel "out of the game" until you are ready to rest completely in the gospel truth.
When God's peace "umpires" your heart, you are fully assured by a strong supernatural sense of peace and certainty—even when everything appears to be working against you. Consider Jesus, Peter, and Paul.
God's peace is the Kingdom's manifested presence in you. Allow God's supernatural peace to rule your heart, and never allow conflicted and contradictory thoughts and feelings, or even trying circumstances, to rob you of the joy and rest that the gospel promises.