John Knox portrait, flat vector illustration

 john knox, scottish reformer, protestant reformation, presbyterian church, religious leader, church reform, sixteenth century, scotland history, calvinist theology, religious movement, protestantism, catholic opposition, church of scotland, preaching sermons, religious doctrine, faith and belief, biblical teaching, theological ideas, religious conflict, european reformation, spiritual leader, ecclesiastical reform, church governance, presbyterianism, reform movement, christian history, religious influence, moral discipline, education reform, religious writings, historical figure, theology study, faith community, religious change, church history, doctrine development, religious authority, christian reformer, spiritual guidance, historical theology