Can saints sin

yes saints can sin in fact not all saints get into the land of God

Roman Catholic AnswerAll human beings, save Our Blessed Lord, and His Mother, were born in original sin, and all of them, including the Blessed Mother, are capable of sin (she just didn't commit any). All of the saints, who once lived on earth, where thus capable of sin during their lifetimes, and all of them sinned. However, they are not declared saints until they are in heaven. And there is no sin in heaven, thus the short answer to your question is NO.