Also see definition of "Enjoin" in Word Study
Enjoin
ENJOIN [isbe]
ENJOIN - en-join': Its usual sense is "to impose something," as a command, a charge or a direction. In this last sense it is used in Job 36:23, i.e. "Who hath directed?" In Est 9:31 it means "to command"; in Philem 1:8, "to order" or "direct."
Also see definition of "Enjoin" in Word Study