The term, elder, has a wider range than the term, bishop. Elder may refer to Old or New Testament offices. It may also refer to men of age, experience, and/or wisdom. Bishop refers to a specific New Testament office.
In 2 Samuel 7, why was David picked to be king? Why he was labeled as the man after God's heart?
What does the Bible say about men going to school to be a preacher?
When non-christians ask us how we know that what we believe in is the truth, and how do we prove it, how do we answer that question?
Did John the Baptist baptize Gentiles or only Jews?
