leopard - The Hebrew comes from a root meaning “spotted” (compare Jer 13:23). Leopards lurk in thickets and thence spring on their victims.
observe - that is, lie in wait for them. Several manuscripts, the Septuagint, Vulgate, Syriac, and Arabic read, by a slight change of the Hebrew vowel pointing, “by the way of Assyria,” a region abounding in leopards and lions. English Version is better.