4 So then the Lord also raised Lazarus to life. You have heard what type of character he represents; in other words, what is meant by the resurrection of Lazarus. Let us now, therefore, read over the passage; and as there is much in this lesson clear already, we shall not go into any detailed exposition, so as to take up more thoroughly the necessary points. “Now a certain man was sick, [named] Lazarus, of Bethany, the town of Mary and Martha, his sisters.” In the previous lesson you remember that the Lord escaped from the hands of those who sought to stone Him, and went away beyond Jordan, where John baptized. When the Lord therefore had taken up His abode there, Lazarus fell sick in Bethany, which was a town lying close to Jerusalem.
Source: Tractates on the Gospel of John (New Advent)