'Myself' in the Bible

and he saith, 'Thy sound I have heard in the garden, and I am afraid, for I am naked, and I hide myself.'

Why hast thou said, She is my sister, and I take her to myself for a wife? and now, lo, thy wife, take and go.'

and saith, 'By Myself I have sworn -- the affirmation of Jehovah -- that because thou hast done this thing, and hast not withheld thy son, thine only one --

My father caused me to swear, saying, Lo, I am dying; in my burying-place which I have prepared for myself in the land of Canaan, there dost thou bury me; and now, let me go up, I pray thee, and bury my father, and return;'