Belief in only one God as distinguished from: henotheism (multiple gods with one supreme god), polytheism (more than one god), pantheism (believing God is in everything) or atheism (not believing there is a god). Christianity is a monotheistic religion believing in the one true God (Deut 6:4; 1 Cor 8:6; Eph 4:6). “You shall not have [or acknowledge] any other gods but me”, is God’s solemn command to us (Ex 20:3; Hos 13:4).

See also: atheist, God, henotheism, pantheism, polytheism, trinity.