What Jesus is promising in this passage is very different from what the world offers. He is promising peace by virtue of His presence in our lives. It’s real. It’s genuine. It’s eternal, and it goes deeper than any of our circumstances.
What makes this so powerful is that Jesus was fully aware of the disturbing suffering that He was about to face, and yet He had such confidence in the purpose and power of the Father that He moved forward wholeheartedly with peace instead of fear. Moving forward, his peace would be a source of courage for the disciples.