The beloved physician, whose praise is in the gospel. His name is borrowed from a Latin word signifying light. He was Paul's companion in several journies, as appears from Colossians 4:14; 2 Timothy 4:11; Philippians 1:23-24. The church is highly indebted to this man, under the Holy Ghost, for the blessed gospel which bears his name, and the Acts of the Apostles. (See, in confirmation, Acts 1:1)