Wasn’t actually today, but it’s an interesting etymology. Old Arabian speaks “majus” because they lack a hard G sound, similar to Japanese lacking L sound
Also, for anyone interested, that means that the Magi who came to Jesus’ birth with gifts were Zoroastrian priests
This isn’t quite right. We start with Old Persian (not Arabic) maguš, pronounced like mag-ush. That gets loaned into Ancient Greek as μάγος (mágos), originally referring to Zoroastrian priests and then generally to magicians, sorcerers, and tricksters in general. This gets carried over to Latin as magus (still pronounced with a ‘hard’ g). The plural of this form is magi, pronounced in Antiquity as mag-ee. As we enter into the Middle Ages, some sound changes happen and most Latin pronunciations soften the G, producing something like maj-ee. At some point in Middle English, the Latin -i plural ending gets replaced with the native English -es plural, producing mages . The singular mage is then derived from that. There’s also undoubtedly an influence from French, where an -age ending would always be pronounced with a soft G (ie, the word age).
Looking a bit deeper, the Bible plays a big role here, as the plural of the Greek word, μάγοι (magoi) is used in the original text of Matthew 2:1. That gets translated in the Latin Vulgate as magi, and then I’d presume a Middle English gospel translation as ‘mages’. The singular ‘mage’ then gets derived from that.
I didn’t try to imply that we should start with arabic, or that that is the source of the current spelling, I left that arabic bit there because of the wiki page being Majus. I did try to be clear in the title: “derives from magush, the old persian name(…)”.
Ah, my bad there, I though you were implying that the reason why the English word has a soft G is because Arabic doesn’t have a hard G sound. Those are actually independent developments. Arabic actually used to have a standard hard G sound (and in Egypt it still does!), but it shifted to the J sound at some point (wanna say vaguely Middle Ages?).