2Esd 14:38-41

38 And on the next day a voice called me, saying, “Ezra, open your mouth and drink what I give you to drink.” 39 So I opened my mouth, and a full cup was offered to me; it was full of something like water, but its color 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.