To understand by the Bible that only God understand the future. The wisdom of men is emitted so what makes people desire to know the future for security or planning scripture reminds us that God's vision is trapped beyond human understanding.
Our focus should be on trusting him day by day rather than being anxious about what is ahead. Instead of revealing the future God calls people to live in faith obedience to the presence.
The bible encourages us to talk to the lord with our hearts and not in our understanding so this show that we need to peace, it does not come from knowing tomorrow but from working closely with God today believing that
he already holds the future in his hands so that is life.