Luke 8:16-18

16"No one after lighting a lamp covers it with a jar or puts it under a bed, but puts it on a stand, so that those who enter may see the light.

17For nothing is hidden that will not be made manifest, nor is anything secret that will not be known and come to light.

18Take care then how you hear, for to the one who has, more will be given, and from the one who has not, even what he thinks that he has will be taken away."