2 Hot Blondes The Lesson John 35 [work] -

The lesson of John 5:35 is that human leaders are at their best when they act as lamps—burning with sincerity and shining with a light that is not their own. It serves as a reminder to look past the "lamp" to the "Light of the World" that it was meant to reveal. John 1:35 Commentary: John and His Two Disciples Explained

So the lesson of John 3:5 is this: