'Myself' in the Bible

speaking to the priests who belong to the house of the Lord of hosts and to the prophets, saying, “[Now that I am returned from exile] shall I weep in the fifth month [mourning the destruction of the temple], and fast as I have done these many years [in Babylon]?”

For I will bend Judah as My bow,I will fit the bow with Ephraim [as My arrow].And I will stir up your sons, O Zion, against your sons, O Greece,And will make you [Israel] like the sword of a warrior.