'Myself' in the Bible

Now I myself, Paul, plead with you with the gentleness and kindness of the Messiah I who am humble when I am face to face with you but forceful toward you when I am away!

Did I commit a sin when I humbled myself by proclaiming to you the gospel of God free of charge, so that you could be exalted?

When I was with you and needed something, I did not bother any of you, because our brothers who came from Macedonia supplied everything I needed. I kept myself from being a burden to you in any way, and I will continue to do so.

I will boast about this man, but as for myself I will boast only about my weaknesses.

I will be very glad to spend my money and myself for you. Do you love me less because I love you so much?