Likutei Moharan, Part II 9:2/ליקוטי מוהר"ן·תנינא ט׳:ב׳

12. However, at those times when a stormwind blows, it causes the fire to burn out of control. Similarly, there are times when a stormwind blows inside a person and causes him to burn out of control. This is the concept of harisah (destruction), as in “lest y’ harsu (they break through) toward God…” (Exodus 19:21). As [the Sages teach]: Do not inquire into that which is too wondrous for you (Chagigah 13a). It is forbidden to break through to ascend to God in a manner unsuited to one’s [spiritual] level. Therefore, when a person sees that he is excessively passionate, beyond measure, he knows that this [stems from] the concept of a stormwind.

2Eliyahu was able to subdue this [passion] (see Zohar III, 227b; Zohar Chadash, Ruth, p.103a). This is why he is called “The man who rode fiery horses in a stormwind” (Liturgy). He would ride and tame the fiery horses in a stormwind—i.e., the passion burning out of control as a result of the stormwind. Eliyahu would ride this and tame it. For the ruach has to blow with control, so that the heart’s passion ignites within measure, in a balanced manner.