2 Esdras 14:39-41

New Revised Standard Version, Anglicised

³⁹ So I opened my mouth, and a full cup was offered to me; it was full of something like water, but its colour was like fire. ⁴⁰ I took it and drank; and when I had drunk it, my heart poured forth understanding, and wisdom increased in my breast, for my spirit retained its memory, ⁴¹ and my mouth was opened and was no longer closed.