Nobody is expected to be perfect, but everyone is expected to be honest.

The Jews are about to complete their forty year journey and enter the Land of Israel! G-d is now giving them a choice: they can choose blessings by listening to the Torah, or can choose a cursed life if they do not obey His commandments. When G-d offers them this choice, He uses the word 'today,' indicating that it is a decision that applies to every Jew every single day. Which do you choose?