Jesus’ challenge shows that the conversion He required for those who would enter the kingdom of heaven (see Matt. 18:3) was far more than just being converted to testify to the truthfulness of the gospel. To testify is to know and to declare. The gospel challenges us to be “converted,” which requires us to do and to become. If any of us relies solely upon our knowledge and testimony of the gospel, we are in the same position as the blessed but still unfinished Apostles whom Jesus challenged to be “converted.” We all know someone who has a strong testimony but does not act upon it so as to be converted.