(Philippians 4:7)
“The peace of God which passes all understanding” means not only the peace which God supplies, but the peace which He Himself enjoys. It is His own peace – “My peace”, as Jesus described it.
(Fred Mitchell)
"Therefore the Lord himself will give you a sign: The virgin will be with child and will give birth to a son, and you will call him Immanuel."
Isaiah 7: 14