Dendron is the standard Greek word for tree, appearing 25 times in the New Testament with a notable concentration in Jesus' teaching and in Revelation's visionary landscapes. The Sermon on the Mount introduces the principle that 'every good tree bears good fruit, but a bad tree bears bad fruit' (Matt 7:17-19), a metaphor reprised in Luke 6:43-44 and applied to the Pharisees and Sadducees by John the Baptist: 'every tree that does not bear good fruit is cut down' (Matt 3:10; Luke 3:9). The mustard seed parable transforms a proverbially tiny seed into a tree large enough for birds to nest in (Matt 13:32; Luke 13:19). In Revelation, the 'tree of life' yields twelve kinds of fruit and its leaves are 'for the healing of the nations' (Rev 22:2, 14), completing the biblical arc that began with the tree of life in Eden. Jude 12 uses 'autumn trees without fruit, twice dead, uprooted' as a vivid image of false teachers. Spanish 'arbol,' French 'arbre,' and German 'Baum' all map to a single lexeme.