 In Madrid, Escrivá was employed as a private tutor and as a chaplain to the Foundation of Santa Isabel, which comprised the royal Convent of Santa Isabel and a school managed by the Little Sisters of the Assumption.A prayerful retreat helped him to discern more definitely what he considered to be God's will for him, and, on 2 October 1928, he "saw" Opus Dei (), a way by which Catholics might learn to sanctify themselves by their secular work.He founded it in 1928, and Pius XII gave it final approval in 1950.