Arsen is the standard Greek adjective-turned-substantive for 'male,' forming the natural counterpart to thelys ('female'). Its most foundational NT usage appears in Jesus' appeal to creation: 'male and female he made them' (Matt 19:4; Mark 10:6), quoting Genesis 1:27 to ground marriage theology. Luke 2:23 cites the Mosaic law that every firstborn male shall be consecrated to the Lord. Paul employs it in Romans 1:27 to describe same-sex relations as a departure from the created order, and Galatians 3:28 declares that in Christ there is neither male nor female. The Spanish 'varon' and French 'male' both emphasize the biological-category sense, while Revelation 12:5 applies it to the male child destined to rule the nations.