Luke 3:9

3:9 Even now the ax is laid at the root of the trees, and every tree that does not produce good fruit will be cut down and thrown into the fire.”

Luke 13:19

13:19 It is like a mustard seed that a man took and sowed in his garden. It grew and became a tree, and the wild birds nested in its branches.”

Luke 17:6

17:6 So the Lord replied, “If you had faith the size of a mustard seed, you could say to this black mulberry tree, ‘Be pulled out by the roots and planted in the sea,’ and it would obey you.