Commentaries:
Robertson's Word Pictures (NT)
As his custom was (kata to eqov). According to the custom (of him). It was because Judas knew the habit of Jesus of going to Gethsemane at night that he undertook to betray him without waiting for the crowd to go home after the feast.
Other Robertson's Word Pictures (NT) entries containing Luke 22:39:
John 18:2
Hebrews 10:25
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