“These things I have spoken to you, so that in Me you may have peace. In the world you have tribulation, but take courage; I have overcome the world.”
John 16:33 NASB
http://bible.com/100/jhn.16.33.NASB
“Peace I leave with you; My peace I give to you; not as the world gives do I give to you. Do not let your heart be troubled, nor let it be fearful.”
John 14:27 NASB
http://bible.com/100/jhn.14.27.NASB