רָתַח râthach — to boil
Translated in the KJV as boil.
a primitive root; to boil.
râthach in each stem
Pu'al
Intensive · passive — the action intensified, repeated or brought about; the subject has it done to them
Perfect (qatal) 1
רֻתְּח֥וּ Job 30:27 Perfect (qatal), 3rd person common plural
My bowels boiled, and rested not: the days of affliction prevented me.
Hiph'il
Causative · active — causing someone or something to do the action; the subject does it
Imperfect (yiqtol) 1
יַרְתִּ֣יחַ Job 41:23 Imperfect (yiqtol), 3rd person masculine singular
The flakes of his flesh are joined together: they are firm in themselves; they cannot be moved.
Pi'el
Intensive · active — the action intensified, repeated or brought about; the subject does it
Imperative 1
רַתַּ֣ח Ezek 24:5 Imperative, 2nd person masculine singular
Take the choice of the flock, and burn also the bones under it, and make it boil well, and let them seethe the bones of it therein.
What the stems mean
A Hebrew verb is its root letters set into a pattern. The pattern — the binyan — is the grammar's way of saying three things at once: whether the action is simple, intensive or causative, and whether its subject is active, passive or reflexive. That is why one Hebrew word can need six English ones. All seven binyanim, explained ›