Matthew 17:15 "O Lord (Master), mercy (perform mercy on, or express mercy in) my son, because he continues being moon-struck (= a lunatic; perhaps = an epileptic) and habitually has it badly (= has an ugly time being ill). You see, many times he has the habit of falling into the fire, and often into the water.

JMNT⁽ⁱ⁾ ¹⁵ "O Lord (Master), mercy (perform mercy on, or express mercy in) my son, because he continues being moon-struck (= a lunatic; perhaps = an epileptic) and habitually has it badly (= has an ugly time being ill). You see, many times he has the habit of falling into the fire, and often into the water.