Learn - by memory if necessary:
from the Catechism of the Catholic Church
1281 Those who die for the faith, those who are catechumens, and all those who, without knowing of the Church but acting under the inspiration of grace, seek God sincerely and strive to fulfill his will, can be saved even if they have not been baptized (cf. LG 16).
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Baptism of desire (Baptismus flaminis sive Spiritus Sancti) Baptism of
desire is the explicit or implicit desire for sacramental baptism (votum
baptismi) associated with perfect contrition (contrition based on
charity).
The Council of Trent teaches that justification from original sin is not
possible " without the washing unto regeneration or the desire for the
same."
According to the teaching of Holy Writ, perfect love possesses justifying
power. Luke 7, 47: "Many sins are forgiven her because she hath loved
much." John 14, 21: " He that loveth me shall be loved of my Father: l and
I will love him and will manifest myself to him." Luke 23, 43 • " This ,
day thou shalt be with me in Paradise."
**The chief witnesses from Tradition are St. Ambrose and St. Augustine. In
the funeral oration on the Emperor Valentine II, who died without Baptism,
St. Ambrose says: " Should he not acquire the grace for which he longed?
Certainly: As he desired it, he has attained it . . . His pious desire has
absolved him "** (De obitu Valent. 51, 53). St. Augustine declared: " I find
that not only suffering for the sake of Christ can replace that which is
lacking in Baptism, but also faith and conversion of the heart (fidem
conversionemque cordis), if perhaps the shortness of the time does not
permit the celebration of the mystery , of Baptism "