Jeremiah 17:8: the tree planted by the waters does not fear when what comes?

Answer: The heat

The man who trusts in the LORD is like a tree by the waters: it does not fear when the heat comes, its leaves stay green, and it bears fruit in drought.

“But blessed is the man who trusts in the LORD, whose confidence is in Him. He is like a tree planted by the waters that sends out its roots toward the stream. It does not fear when the heat comes, and its leaves are always green. It does not worry in a year of drought, nor does it cease to produce fruit.”— Jeremiah 17:7-8 (BSB)