Mark 4:21

New English Translation

²¹He also said to them, “A lamp^[a] isn’t brought to be put under a basket^[b] or under a bed, is it? Isn’t it to be placed on a lampstand?

Mark 4:21 sn The lamp is probably an ancient oil burning lamp or perhaps a candlestick. Jesus is comparing revelation to light, particularly the revelation of his ministry.
Mark 4:21 tn Or “a bowl”; this refers to any container for dry material of about eight liters (two gallons) capacity. It could be translated “basket, box, bowl” (L&N 6.151).

New English Translation (NET)