“In his book Church History, Father John Laux, M. A., writes:
‘If he [the Christian] was destined to lose his life, he had been taught that martyrdom was a second Baptism, which washed away every stain, and that the soul of the martyr was secure in immediate admission to the perfect happiness of heaven.’
“Fifth, when a martyr is referred to as a ‘catechumen,’ it does not always mean he was not yet baptized. A catechumen was a person learning the Faith, as a student in a class called a catechumenate, under a teacher called a catechist. That students continued in their class even after they were baptized is confirmed conclusively by these words of Saint Ambrose to his catechumens: “I know very well that many things still have to be explained. It may strike you as strange that you were not given a complete teaching on the sacraments before you were baptized. However, the ancient discipline of the Church forbids us to reveal the Christian mysteries to the uninitiated. For the full meaning of the sacraments cannot be grasped without the light which they themselves shed in your hearts.” (On the Mysteries and On the Sacraments, Saint Ambrose)