Saint
Isaac
Righteous Isaac
New Calendar December 15 Old Calendar December 28
Why they are a saint
The Righteous Isaac was the second of the Old Testament Patriarchs, and the son of Abraham (Genesis 17:17-22). The Orthodox Church commemorates Isaac on December 15.
Patronage / why chosen as patron
Orthodox Christians usually take Isaac as a patron when they bear the name Isaac at baptism, or were born or baptized near the feast on December 15.
Prayer
O holy Isaac, pray to God for us.
A short general prayer to a saint, not a liturgical text. No public-domain troparion for this saint is included.