The people are presented with a very clear choice regarding their futures:
רְאֵה אָנכִי נתֵן לִפְנֵיכֶם הַיּוֹם בְּרָכָה וּקְלָלָה – Behold, I am giving before you today a blessing and a curse. (11:26)
Curiously, there is transition from singular – רְאֵה – to the plural – לִפְנֵיכֶם. The choice presented is clearly by God – why specify אָנכִי then; who else would be speaking? It is also given in the present tense – נתֵן – when it ought to say נתתי – ‘I have given’, and with emphasis on הַיּוֹם – today. Further, why is the choice לִפְנֵיכֶם – ‘before you’, and not לכם – ‘to you’?
The Vilna Gaon explains that the choice is not a general stand alone principle; it is a personal, ever-relevant choice. Anyone, at anytime, can become something more, and can repair past misdeeds. Hashem is נתן – ‘giving’ us the choice – in the present tense. The opportunity is always there.
This is accentuated – הַיּוֹם – ‘today’; forget about yesterday. Chazal understand that a Baal Teshuva is like a newborn; a new person by turning over a new leaf.
Despite the niggling self-doubt in the recesses of the mind at the ability to change, Hashem assures that you are not alone – אָנכִי – “I am with you in the struggle”. The Gemara teaches that the evil inclination seeks to consume and destroy mankind, and without God’s help we would be powerless to resist. God is with us.
But the choice remains ours. We have to exercise our free will and make the decision. God can only present the opportunity – אָנכִי נתֵן לִפְנֵיכֶם.
R Yitzchak Lande points out that the Torah frequently switches from plural to singular, to teach that although there is an expectation of society – every single Jew has to participate. And if society aren’t doing it, you have to do it on your own.
In a world of fugitives, the person taking the opposite direction will appear to be running away.