The lamp under a basket teaches that revelation is meant to be disclosed.

²¹And he said unto them, Is a candle brought to be put under a bushel, or under a bed? and not to be set on a candlestick?

²²For there is nothing hid, which shall not be manifested; neither was any thing kept secret, but that it should come abroad.

²³If any man have ears to hear, let him hear.

²⁴And he said unto them, Take heed what ye hear: with what measure ye mete, it shall be measured to you: and unto you that hear shall more be given.

²⁵For he that hath, to him shall be given: and he that hath not, from him shall be taken even that which he hath.

¹⁶No man, when he hath lighted a candle, covereth it with a vessel, or putteth it under a bed; but setteth it on a candlestick, that they which enter in may see the light.

¹⁷For nothing is secret, that shall not be made manifest; neither any thing hid, that shall not be known and come abroad.

¹⁸Take heed therefore how ye hear: for whosoever hath, to him shall be given; and whosoever hath not, from him shall be taken even that which he seemeth to have.

³³No man, when he hath lighted a candle, putteth it in a secret place, neither under a bushel, but on a candlestick, that they which come in may see the light.