'Leader' in the Bible

And thou dost know, and dost consider wisely, from the going forth of the word to restore and to build Jerusalem till Messiah the Leader is seven weeks, and sixty and two weeks: the broad place hath been built again, and the rampart, even in the distress of the times.

And after the sixty and two weeks, cut off is Messiah, and the city and the holy place are not his, the Leader who hath come doth destroy the people; and its end is with a flood, and till the end is war, determined are desolations.

And the arms of the flood are overflowed from before him, and are broken; and also the leader of the covenant.