Infancy Gospel of Thomas 6
1Now a certain teacher, Zacchaeus by name, stood there, and he heard in part when Jesus said these things to his father, and he marvelled greatly that being a young child he spake such matters.
2And after a few days he came near unto Joseph and said unto him: Thou hast a wise child; and he hath | understanding. Come, deliver him to me that he may learn letters. And I will teach him with the letters all knowledge, and that he salute all the elders and honour them as grandfathers and fathers, and love them of his own years.
3And he told him all the letters from Alpha even to Omega clearly, with much questioning. But Jesus looked upon Zacchaeus the teacher and saith unto hinr: Thou that knowest not the Alpha according to its nature, how canst thou teach others the Beta? thou hypocrite, first, if thou knowest it, teach the Alpha, and then will we believe thee concerning the Beta. Then began he to confound the mouth of the teacher concerning the first letter, and he could not prevail to answer him.
4And in the hearing of many the young child saith to Zacchaeus: Hear, O teacher, the ordinance of the first letter and pay heed to this, how that it hath [ what follows is really unintelligible in this and in all the parallel texts: a literal version would run something like thus : how that it hath lines, and a middle mark, which thou seest, common to both, going apart; coming together, raised up on high, dancing ( a corrupt word ), of three signs, like in kind ( a corrupt word ), balanced, equal in measure]: thou hast the rules of the Alpha.