The true reason is that once they admit that there is a God, they also must realize that they are responsible to God and in need of forgiveness from Him (Romans 3:23,6:23).
Tshiitisi tsha vhukuma ndi uri arali vha tenda kha uri hu na Mudzimu, vha fanela u tenda uri vha na vhuḓifhinduleli kha Mudzimu nahone vha fanela u humbela khangwelo Khae (Vha-Roma 3:23, 6:23).