Luke 17:31 warns against going back for possessions on the day of the Lord — the same 'no looking back' principle as the plowman.

Luke 17:32 recalls Lot's wife who looked back — the ultimate warning against turning back from God's call, directly paralleling the plowman.

2 Timothy 4:10 describes Demas' desertion for love of the world — a concrete example of looking back after starting.

Hebrews 10:38 warns against shrinking back — the same idea of not persevering, as Jesus warns about looking back.

2 Peter 2:20-22 depicts those who return to their sins after knowing Christ — a vivid parallel to looking back after starting.

Genesis 19:17 commands Lot not to look back — a direct Old Testament parallel to Jesus' warning.

1 Kings 19:21 shows Elisha burning his plow to follow Elijah — a positive example of not looking back.

In Jonah 1:3, Jonah flees from God's call — the opposite of the forward-looking commitment Jesus requires here.

John 6:66 records disciples turning back and no longer following Jesus — a direct foil to the one who puts hand to plow and does not look back.

In Philippians 3:13, Paul speaks of forgetting what is behind and straining forward — a clear parallel to not looking back while plowing.