Centuries before it was formally adopted as a teaching of the Catholic Church in 1854, the Carmelite Order promoted the idea of Mary's Immaculate Conception. Read more here about the central Carmelite teaching around 'purity of heart' (Puritas Cordis in Latin) and the gifts we receive 'in God's grace' to fulfill our role in this life:

https://www.stjudeshrine.org.uk/11-september-2020