'Myself' in the Bible

And he said, I heard thy voice in the garden, and I feared, because I am naked; and I hid myself.

and said, By myself I swear, saith Jehovah, that, because thou hast done this, and hast not withheld thy son, thine only son,

My father made me swear, saying, Behold, I die; in my grave which I have dug myself in the land of Canaan, there shalt thou bury me. And now, let me go up, I pray thee, that I may bury my father; and I will come again.