Acts 18:1-3:

After these things Paul departed from Athens, and came to Corinth;
And found a certain Jew named Aquila, born in Pontus, lately come from Italy, with his wife Priscilla; (because that Claudius had commanded all Jews to depart from Rome:) and came unto them.
And because he was of the same craft, he abode with them, and wrought: for by their occupation they were tentmakers.

See also:

Objection: Paul Did Not Believe in Faith Healing Because He Had a Doctor (Luke) Accompany Him
Objection: Luke Was a Physician; He Didn’t Give Up His Vocation to Lay Hands on People