'Strange' in the Bible

And Jacob said to his household, and to all that were with him, Put away the strange gods that are among you, and cleanse yourselves, and change your garments;

And they gave to Jacob all the strange gods that were in their hand, and the rings that were in their ears, and Jacob hid them under the terebinth that is by Shechem.

And Joseph saw his brethren, and knew them; but he made himself strange to them, and spoke roughly to them, and said to them, Whence come ye? And they said, From the land of Canaan, to buy food.