The earliest written form of the Germanic word God (always, in this usage, capitalized) comes from the 6th century Christian Codex Argenteus. The English word itself is derived from the Proto-Germanic * ǥuđan. Most linguists agree that the reconstructed Proto-Indo-European form * ǵhu-tó-m was based on the root * ǵhau(ə)-, which meant either “to call” or “to invoke”. The Germanic words for God were originally neuter—applying to both genders—but during the process of the Christianization of the Germanic peoples from their indigenous Germanic paganism, the word became a masculine syntactic form.
In the English language, the capitalized form of God continues to represent a distinction between monotheistic “God” and “gods” in polytheism. The English word “God” and its counterparts in other languages are normally used for any and all conceptions and, in spite of significant differences between religions, the term remains an English translation common to all. The same holds for Hebrew El, but in Judaism, God is also given a proper name, the tetragrammaton (written YHWH), in origin the name of an Edomite or Midianite deity, Yahweh. In many translations of the Bible, when the word “LORD” is in all capitals, it signifies that the word represents the tetragrammaton. Allāh (Arabic: الله allāh) is the Arabic term with no plural or gender used by Muslims and Arabic speaking Christians and Jews meaning “The God” (with a capital G), while “ʾilāh” (Arabic: إله ellāh) is the term used for a deity or a god in general. God may also be given a proper name in monotheistic currents of Hinduism which emphasize the personal nature of God, with early references to his name as Krishna-Vasudeva in Bhagavata or later Vishnu and Hari.