'Leaf' in the Bible

The dove came back to him in the evening, and there, in her beak, was a fresh olive leaf. So Noah knew that the water level had subsided from the earth.

As for those who are left of you, I will bring despair (lack of courage, weakness) into their hearts in the lands of their enemies; the sound of a scattered leaf will put them to flight, and they will flee as if [running] from the sword, and will fall even when no one is chasing them.

“Will You cause a windblown leaf to tremble?Will You pursue the chaff of the dry stubble?

And he will be like a tree firmly planted [and fed] by streams of water,Which yields its fruit in its season;Its leaf does not wither;And in whatever he does, he prospers [and comes to maturity].

For you will be like an oak whose leaf withers and diesAnd like a garden that has no water.

All the host of heaven will be dissolved,And the skies will be rolled up like a scroll;All their hosts [the stars and the planets] will also wither awayAs a leaf withers from the vine,And as a fig withers from the fig tree.

For we all have become like one who is [ceremonially] unclean [like a leper],And all our deeds of righteousness are like filthy rags;We all wither and decay like a leaf,And our wickedness [our sin, our injustice, our wrongdoing], like the wind, takes us away [carrying us far from God’s favor, toward destruction].

“I will gather and snatch them away [utterly consuming them],” says the Lord.“There will be no grapes on the vine,Nor figs on the fig tree,And even the leaf will wither;And the things that I have given them will pass away [by the hand of those whom I have appointed].”’”

“For he will be [nourished] like a tree planted by the waters,That spreads out its roots by the river;And will not fear the heat when it comes;But its leaves will be green and moist.And it will not be anxious and concerned in a year of droughtNor stop bearing fruit.

Then he brought me to the porch of the temple, and he measured each side pillar of the porch, five cubits on each side; and the width of the gate was three cubits on each side.

By the river on its bank, on one side and on the other, will grow all kinds of trees for food. Their leaves will not wither and their fruit will not fail. They shall bear every month because their water flows from the sanctuary, and their fruit will be for food and their leaves for healing.”

as soon as they put out leaves, you see it and know for yourselves that summer is near.