The reference to "saints" according to Scripture are all those in the Body of Christ, by the Faith of His Testimony, saved by His Grace. That is every member of His Congregation, who are of the First Born.
Obviously then, every Saint was not only a vile sinner, but was also born in sin, including the saint from whom God took His Son's flesh, Miriam.
What saints are not are a super-dooper higher class of believers in Christ as portrayed by the apostate church.