When native seekers of the island of Madagascar used to present themselves for baptism, it was often asked of them, “What first led you to think of becoming followers of Jesus Christ?”
The answer usually was that the changed conduct of others who had become followers of Christ was what first arrested their attention.
They would say: “I knew this man to be a thief; that one was a drunkard; another was very cruel & unkind to his family. Now they are all changed. The thief is an honest man; the drunkard is sober & respectable; and the other is gentle & kind in his home. There must be something in it that can work such changes.”
Source: The Biblical Museum, Volume II, James Comper Gray (ministry127.com)
2Co 5:17 (GW): "Whoever is a believer in Christ is a new creation. The old way of living has disappeared. A new way of living has come into existence."
"Baptism is bowing before the Father and letting Him do His work." - Max Lucado.
Mar 16:16 (ISV): "Whoever believes and is baptized will be saved, but whoever doesn't believe will be condemned."