Ambrose of Milan
Catena Aurea · Lukasevangelium 1
And it came to pass, that on the eighth day they came to circumcise the child; and they called him Zacharias, after the name of his father. And his mother answered and said, Not so; but he shall be called John. And they said unto her, There is none of thy kindred that is called by this name. And they made signs to his father, how he would have him called. And he asked for a writing table, and wrote, saying, His name is John. And they marvelled all. And his mouth was opened immediately, and his tongue loosed, and he spake, and praised God.
The holy Evangelist has especially remarked, that many thought the child should be called after his father Zacharias, in order that we might understand, not that any name of his kinsfolk was displeasing to his mother, but that the same word had been communicated to her by the Holy Spirit, which had been foretold by the Angel to Zacharias. And in truth, being dumb, Zacharias was unable to mention his son’s name to his wife, but Elisabeth obtained by prophecy what she had not learnt from her husband. Hence it follows, And she answered, &c. Marvel not that the woman pronounced the name which she had never heard, seeing the Holy Spirit who imparted it to the Angel revealed it to her; nor could she be ignorant of the forerunner of the Lord, who had prophesied of Christ. And it well follows, And they said unto her, &c. that you might consider that the name belongs not to the family, but to the Prophet. Zacharias also is questioned, and signs made to him, as it follows, And they made signs to the father, &c. But since unbelief had so bereft him of utterance and hearing, that he could not use his voice, he spoke by his hand-writing, as it follows, And he asked for a writing table, and wrote, saying, His name is John; that is, we give no name to him who has received his name from God.