Passage
For he shall be like a tree planted by the waters, and that spreadeth out its roots by the stream, and he shall not see when heat cometh, but his leaf shall be green; and in the year of drought he shall not be careful, neither shall he cease to yield fruit.
Nearby Context
Jeremiah 17:6 And he shall be like the heath in the desert, and shall not see when good cometh; but he shall inhabit the parched places in the wilderness, a salt land and not inhabited.
Jeremiah 17:7 Blessed is the man that confideth in Jehovah, and whose confidence Jehovah is.
Jeremiah 17:8 For he shall be like a tree planted by the waters, and that spreadeth out its roots by the stream, and he shall not see when heat cometh, but his leaf shall be green; and in the year of drought he shall not be careful, neither shall he cease to yield fruit.
Jeremiah 17:9 The heart is deceitful above all things, and incurable; who can know it?
Jeremiah 17:10 I Jehovah search the heart, I try the reins, even to give each one according to his ways, according to the fruit of his doings.
Study Lenses
The verse centers on "shall", "like", "tree", "planted", "waters", "spreadeth", "roots", and "stream". It is saying that the verse draws attention to "shall" and "like", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 7's "Blessed is the man that confideth in..." into verse 9's "The heart is deceitful above all things...", so "shall" and "like" belong inside that flow. In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "shall" and "like" with trust shaped by these words, not by a vague optimism outside the passage.