Is. 26:3 You will keep in perfect peace all who trust in you, whose thoughts are fixed on you!
This is not a maybe promise! God say He WILL keep in perfect peace all who trust in Him. Perfect peace is the absolute knowledge that God is real in the heart. It is knowing that we have held nothing back from Him, that we have confessed all of our sins. It is knowing that God is in control and will never fail to be with us or let us down. It is knowing that the desire of the heart is that God’s will be done and not our own. It is knowing that God is able and putting all of our trust in Him. It is knowing that God is eternally the same and can never change.
Perfect peace comes to those who trust in the Lord with all their heart, mind and soul. It happens when we cease to doubt God, when we believe in His absolute goodness and holiness to the point where we know that He always acts on our behalf out of love and for our good.
Perfect peace comes to those who fix their thoughts on Him. There is so much to occupy our minds with. We are constantly being bombarded with things to think about. Since the world is for now Satan’s playground, it stands to reason that much of what we are exposed to is evil. It takes a disciplined mind to not focus on evil. A mind fixed on the Lord consistently and regularly feeds on godly things. There is much time spent in God’s Word and prayer. There is time spent surrounded by godly people. There is time spent seeing the world through God’s eyes. We train our minds to think of the world as a place of pain and not pleasure. A trained mind understands the lostness of the world and how precious it is to not be lost anymore.
Perfect peace is being able to rest in the knowledge that all is well with our souls. It is keeping our souls pure before God by confessing our sins and striving to live life by Christ’s righteousness in us. It is a heart fully surrendered to the lordship of Christ over us.