"Peace I leave with you; my peace I give to you." ( John 14:27)

"...in me you may have peace. In the world you face persecution. But take courage; I have conquered the world!" ( John 16:33)

"Come to me, all you that are weary and are carrying heavy burdens, and I will give you rest. Take my yoke upon you, and learn from me; for I am gentle and humble in heart, and you will find rest for your souls. For my yoke is easy, and my burden is light." ( Matthew 11:28-30)

Helpful links to related questions/topics

Peace for the Anxious Not Peace but Division Do Not Worry. God Knows and Will Meet Your Needs Anxiety Have Faith (Trust) in God - Jesus Jesus Promises the Holy Spirit Do Not Worry