κρατήσει [7 verses](3rd sg fut ind act or 2nd sg fut ind mid) "Lay hold" is from krateo, which means to be strong, powerful: "to rule," "to hold sway," " "to conquer," "to prevail over," "to get the upper hand," "to seize," "to control," and "to command."  With a genitive object, it means "to be the lord and master over" and "to rule over." - "Lay hold" is f a verb that means "to be strong," "to prevail," "to get possession of," and "to lay hold of." In English, "overpower" is a good equivalent. When used with the genitive object here, the sense is "to rule over" or "the be above."