'One's' in the Bible

'Teacher, Moses wrote to us, that if any one's brother may die, and may leave a wife, and may leave no children, that his brother may take his wife, and raise up seed to his brother.

and to love Him out of all the heart, and out of all the understanding, and out of all the soul, and out of all the strength, and to love one's neighbour as one's self, is more than all the whole burnt-offerings and the sacrifices.'