They kill animals for sacrifice. They invoke the spirits and talk with ghosts. When faith is joined to Sattwa, it leads to salvation. When Rajas preponderates, it colours the faith and leads to various activities. When Tamas predominates, the faith results in darkness.
Faith acquires different qualities when it is in company with the mind of man.
Mind is a thing of many colours. Just as the water of the Ganges River is contaminated by being put in a vessel where liquor had been kept, so also a virtuous person is spoiled by bad company or constant association with evil persons. The three gunas or attributes colour the faith of a man. The mind of a man is governed by the preponderating attribute or quality which manifests when the other two qualities are suppressed. Faith takes a threefold aspect in accordance with the inherent nature or tendencies of the man.