According to the OT:
Saints :gadowsh meaning Holy one and referes to those that have kept themselves free of difelment, idolatry, and other unlcean and profane things or the word gaddiysh which means those who are sacred to the most high, but can also man gods or deities.
In the NT:
Saint: Hagios, meaning someone(something) revered, worthy of veneration, someone whos services God employs.
Both meaning show that the individul is special and unique in God's eyes, yet there is no mention of any saint by name, the term always being use din the plural.
Paul often addresses his letters to "the saints" of whatever church he was writing too and mentions "the saints" in general.
So, who are they and who decides who they are?