Luke 6:43-46 - The Sermon On The Plain: Trees And Their Fruit
43 For there is no healthy tree that produces bad fruit; nor is there a diseased tree that produces wholesome fruit. 44 For each tree is recognized by its own fruit. For people do not harvest figs from thorn bushes, nor grapes from a brier bush. 45 The good person produces good things from the goodness stored up in his heart. And the evil person produces bad things from the evil [stored up in his heart]. For his mouth speaks what his heart is filled with.
46 And why do you call me 'Lord, Lord,' and [yet] not obey what I tell you to do?