Genesis 50:25

Joseph took an oath, for the same reason which moved Jacob to require an oath from him, Genesis 47:30,31, of the children of Israel: he saith not, of his brethren, but of Israel's children; under which his grandchildren are comprehended, and seem principally intended here; either because his brethren were most of them dead, or rather because he knew that they were not to go out of Egypt in his brethren's time, but in their second or third generation. My bones, i.e. my dead body: but he mentions only his bones, because part of his body was corrupted, and the other part, though preserved from corruption by the embalming, yet was so changed and adulterated with the spices, and other materials which they used, that it looked like another thing: only his bones remained entire and unchanged. Quest. Why did he not desire to be presently carried thither, and buried there, as his father did? Answ.

1. Lest he should disoblige the Egyptians, and provoke them against his brethren and children. The removal of his father thither was necessary, and forced from him by an oath, but the order for the removal of himself would have been voluntary and designed, and therefore could not have escaped the censure of an ungrateful contempt of the land of Egypt, which as it was thought good enough for him and his to live in, should have been judged so too for his burial.

2. That by these his remains his memory might be the longer and better preserved, both with the Egyptians, who for his sake might show kindness to his near relations; and with the Israelites, to whom this was a visible pledge of their deliverance, and a help to their faith, and all obligation to them to persist in the true religion.