Gather and I will tell you...

First comes belief, faith, trust, confidence.... then comes knowledge. Or better yet, first comes knowledge based on belief, trust, etc. and then comes the confirmation of the knowledge based on actual experience.
Imagine how different things would be if we knew the outcome of things before we got involved in the vicissitudes of life. It seems clear that G-d does not want us to KNOW what is going to happen, rather He wants us to behave in a proper way and take actions based on Torah morality, ethics, and training in mitzvot. To a certain extent, how we behave will determine what will happen. It is then counter-productive to be told in advance.
This is how we can understand what happened to Yaakov Avinu when the Sh'china left him momentarily, when he was about to share his prophetic knowledge with his children.

It is the lack of knowledge of the future that makes our day to day decisions so significant. This, on an individual level, and on a national level. We do not know what will be, and (perhaps) therefore our decisions are so important.
(shortened because of lack of space in the hard copy)