As Deuteronomy moves to a close, there is a long section of blessings and curses. This was common in ancient suzerain covenants and serves as a "wrap up" for the Torah. Basically, it's a recognition of "do X get Y" at the hands of God. Yet, it is such a staggering summary of life choices, international powers shifts and natural phenomena that to reduce the Torah to a linear equation of "do X get Y" seems totally preposterous.
That is why 29:29 jumps off the page at me. "The secret things belong to the Lord our God, but the things revealed belong to us and to our children forever, that we may follow all the words of this law."
So much of life is out of my control. I have little to no influence over much that shapes my life. Yet there are things that I can choose. I can choose where to put my trust, how I will react to injustice, and how to express compassion. That which originates within
my heart and mind, I can control. These choices belong to me - and for those choices the Father revealed his will. For the rest of life that I can't control, there is trust. That portion of life with its "secret things belong[s] to the Lord our God".
Perhaps the great task of life is recognizing into which category each decision falls - within my realm of control and therefore guided by the revealed will of God or outside of my realm of control and therefore to be trusted in the hands of the Father.