Luke 19:41-44

As He approached Jerusalem, He saw the city and wept over it [and the spiritual ignorance of its people], saying, “If [only] you had known on this day [of salvation], even you, the things which make for peace [and on which peace depends]! But now they have been hidden from your eyes. For a time [of siege] is coming when your enemies will put up a barricade [with pointed stakes] against you, and surround you [with armies] and hem you in on every side, [Is 29:3; Jer 6:6; Ezek 4:2] and they will level you to the ground, you [Jerusalem] and your children within you. They will not leave in you one stone on another, all because you did not [come progressively to] recognize [from observation and personal experience] the time of your visitation [when God was gracious toward you and offered you salvation].”