Matthew 3:10
Even now the ax is laid at the root of the trees, and every tree therefore that does not bear good fruit is cut down and thrown into the fire.
Matthew 7:15-20
"Beware of false prophets, who come to you in sheep's clothing, but inwardly they are ravenous wolves.
Matthew 21:19
And seeing a fig tree by the road he went to it, and found nothing on it but leaves only. And he said to it, "May no fruit ever come from you again!" And immediately the fig tree withered.
Luke 13:7-9
So he said to the keeper of his vineyard, 'Look, for three years I have come seeking fruit on this fig tree and find none. Cut it down; why should it use up the ground?'
John 15:2-8
Every branch in me that bears no fruit he takes away; and every branch that does bear fruit he prunes, so that it may bear more fruit.