The term 'Christian, for one' is a description of someone who follows the religion of Christianity. The crossword solutions for this term are 'BELIEVER' (8 letters) and 'ERA' (3 letters). Christianity is a monotheistic religion based on the teachings of Jesus Christ, who lived during the 1st century CE. Believers in Christianity are known as Christians, and the ERA in which Jesus lived is referred to as the Christian ERA.