A psalm of David.
Rejoice in the Lord always. I will say it again: Rejoice! 5 Let your gentleness be evident to all. The Lord is near. 6 Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. 7 And the peace of God,which transcends all understanding, will guard your hearts and your minds in Christ Jesus.
John 14:27, 16:33
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.
33 “I have told you these things, so that in me you may have peace. In this world you will have trouble. But take heart! I have overcome the world.”