Jesus' second witness is His works — the miracles themselves. The healing at Bethesda, the turning of water to wine, and all the miracles are God's own testimony that Jesus is the one He sent.
Memory phrase: Jesus' works prove who He is.
Talk about it: Jesus says His miracles are proof of who He is. Can you name three miracles of Jesus that 'witness' to His identity?
Prayer: Jesus, Your works show that You are the Son of God. I believe in You because of who You are and what You do.