Tafsir of Ash-Shu`ara' 26:37

(They will bring to you) is in the jussive mood as the response to the imperative command; meaning: "If you send for them, they will bring to you."

(Every learned sorcerer): One who practices sorcery excessively, (learned): surpassing in his knowledge. Since the important matter here is the act of sorcery, they brought that which indicates excellence in it.

Al-A'mash and 'Asim, in one narration, read it as: (bi-kulli sahirin 'alim)—"every learned sorcerer."