These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
John 16:33 KJV
The words “spoken unto you” are found in the Bible; no where else, and real peace only comes from the Jesus of the Bible. He walked on earth as the Word incarnate.
In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men. John 1:1-4 KJV