Sforno on Deuteronomy 4:29/ספורנו על דברים ד׳:כ״ט

1ומצאת, even though you will not have a Temple at your disposal once you are exiled, not any of its sacred vessels.

2כי תדרשנו בכל לבבך ובכל נפשך בצר לך, the reason why you will be able to find your way to G’d is that your conditions in exile will be so tough that you will turn to G’d sincerely with all your heart and all your soul.