'Yourself' in the Bible

For this time I will send all my punishments on yourself and on your servants and on your people; so that you may see that there is no other like me in all the earth.

And when Moses' father-in-law saw all he was doing, he said, What is this you are doing for the people? why are you seated here by yourself, with all the people waiting before you from morning till evening?

Your strength and that of the people will be completely used up: this work is more than you are able to do by yourself.

And Moses said, If you yourself are not going with us, do not send us on from here.