While knowledge is acquired and is the achievement of the mind, wisdom is the quality that evolves to be a possession of the immortal, immaterial and divine Soul. Spirituality is not different from religiosity. Prophets who have had the highest spiritual experiences, were all very religious. They attuned themselves with the Supreme White Light and personally experienced Its Divine Working through the different colours of the spectrum and established their different religions accordingly. Religion being a pathway to God, religiosity is spirituality itself.
Spirituality is indeed the highest religious experience possible.
It is the yearning of the Soul to merge with The Spirit in immortality. In yoga, tranquillity of the mind must prevail so that the Soul can communicate with the Spirit, unhindered. Only a spiritually enlightened mind and not the mundane intelligence can successfully overcome the fetters of the dual mentalities and pave the way for the Soul to attune with the Spirit.