Matthew 5:15
Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house.
Cross-references
Mark 4:21
Parallel
Mark 4:21 records the same lamp-under-basket saying — a clear parallel of Jesus' teaching on letting light shine.
Luke 8:16
Parallel
Luke 8:16 gives an identical lamp saying — Jesus' metaphor for not hiding the light.
Luke 11:33
Parallel
Luke 11:33 repeats the lamp-on-stand teaching — another Synoptic parallel to this saying.