Philippians 4:7 And the peace of God, which passes all understanding, shall keep your hearts and minds through Christ Jesus.
‘The peace of God’ – John 14:27 states that Christ left us with His peace and that He gave it unto us, not as the world gives peace, which is always temporary and fleeting. Then He warned us not to let our hearts be troubled or afraid. Both fear and troubles cancel our peace and let us focus on the storms and not on Christ who can command the storms to be still. In John 16:33 we also see that Christ comforted His disciples the evening before His crucifixion with this peace when He said that He had the Father with Him and therefore they must have their peace in Him; He warned that in this world we shall have tribulation, but we must be of good cheer for He has overcome the world. From these scriptures and many others where Christ always ended most communication with “go in peace” (Mark 5:34; Luke 7:50; 8:48); “Peace be unto you” (Luke 34:36; John 20:19, 21, 26). Because peace is part of the fruit of the Spirit (Gal. 5:22) we cannot afford to lose it to any degree or for any cause, that is why this peace passes all understanding, because it is not something everyone can have or can maintain without being of the right mindset (4:8; 2Cor. 10:3-7) and not allowing any form of fear or upset (Job 3:25; John 14:1, 27; 2Tim. 1:7; 1Pet. 3:14).
‘Shall keep’ [Greek: phroureo] garrison; keep watch or guard. There are ten secrets for the cure of worry: Permit the peace of God to garrison or keep your heart and mind through Jesus Christ (4:7). Renounce all worry; then by prayer, supplication, and thanksgiving, make all requests known to God (4:6; Jas. 4:7). Think about the right things (4:8). Keep your mind stayed on God (Isa. 26:3; Col. 3:2). Use the weapons of spiritual warfare (2Cor. 10:4-6). Put on the whole armour of God (Eph. 6:10-18). Have faith in God (Matt. 6:25-34; 7:7-11; 17:20; 21:22; Mark 11:22-24). Live and walk in the Spirit (Gal. 5:16-26; Rom. 6:14-23; 8:1-13). Do not cast away confidence (Heb. 3:6, 12-14; 6:11-12; 10:19-23, 35-39). Cast all your cares upon God (1Pet. 5:7).