When he urged Christians to "keep yourselves in God's love," he also revealed in the same passage the key to doing so, saying: "Build yourselves up on your most holy faith."
Nekakhuthaza amaKrestu bona 'ahlale ethandweni lakaZimu,' godu waveza endimeni le isilodlhelo sokwenza njalo wathi: "Zakheni ekukholweni kwenu okucwengileko."