Types of Faith

Mental faith combats doubt and helps to open to the true knowledge; vital faith prevents the attacks of the hostile forces or defeats them and helps to open to the true spiritual will and action; physical faith keeps one firm through all physical obscurity, inertia or suffering and helps to open to the foundation of the true consciousness; psychic faith opens to the direct touch of the Divine and helps to bring union and surrender.

Ref: Letters on Yoga Vol II