Commentaries:
Barnes' Notes
The verse means: "Show hospitality, even though the corresponding return of hospitality to you may seem improbable; nevertheless, be hospitable in faith." Compare Luke 14:13-14; Hebrews 13:2. Some interpreters (not unreasonably) understand by "bread" the seed from the produce of which bread is made. Seed cast upon the fertile soil flooded by the early rains would be returned to the sower in autumn with large increase.
Other commentary entries containing this verse:
Isaiah 32:20
2 Corinthians 9:6
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