Anf-01 ix.iv.xxii Pg 22
Eph. iv. 10.
But in this that he said, “The Lord Himself shall give you a sign,” he declared an unlooked-for thing with regard to His generation, which could have been accomplished in no other way than by God the Lord of all, God Himself giving a sign in the house of David. For what great thing or what sign should have been in this, that a young woman conceiving by a man should bring forth,—a thing which happens to all women that produce offspring? But since an unlooked-for salvation was to be provided for men through the help of God, so also was the unlooked-for birth from a virgin accomplished; God giving this sign, but man not working it out.
Anf-02 vi.iv.vi.xi Pg 19.1
Treasury of Scriptural Knowledge, Chapter 4
VERSE (10) - Eph 1:20-23 Ac 1:9,11 1Ti 3:16 Heb 4:14; 7:26; 8:1; 9:23,24