John 14:27
Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid.
Philippians 4:6,7
Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.
Peace is a state of mind, heart, and character.
"The knowledge that we are never alone calms the troubled sea of our lives and speaks peace to our souls." - A.W. Tozer
Peace that comes from God is not a state of happiness that depends on circumstances. It is a deep, inner confidence that God is alive in us, working all things together for our good.