Augustine of Hippo
Catena Aurea · Johannesevangelium 2
Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things? Jesus answered and said unto them, Destroy this temple, and in three days I will raise it up. Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days? But he spake of the temple of his body. When therefore he was risen from the dead, his disciples remembered that he had said this unto them: and they believed the Scripture, and the word which Jesus had said.
(b. lxxxiii. Quæst. 2. 5. f.) The process of human conception is said to be this. The first six days produce a substance like milk, which in the following nine is converted into blood; in twelve more isconsolidated, in eighteen more is formed into a perfect set of limbs, the growth and enlargement of which fills up the rest of the time till the birth. For six, and nine, and twelve, and eighteen, added together are forty-five, and with the addition of one (which1 stands for the summing up, all these numbers being collected into one) forty-six. This multiplied by the number six, which stands at the head of this calculation2, makes two hundred and seventy-six, i. e. nine months and six days. It is no unmeaning information then that the temple was forty and six years building; for the temple prefigured His Body, and as many years as the temple was in building, so many days was the Lord’s Body in forming.