God wants you to live a long and fulfilling life, because HE loves you—HE wants the very best for you. HE is interested in you, living a good life—a good life that includes, Good Health, Good Success, Victory, and Prosperity; Understanding, Wisdom, and Righteousness.
Too often we let our fears of what lies ahead keep us from receiving the full blessing that God has in store for us just like the Children of Israel did. Only two, Joshua and Caleb, saw the "Promise" and all the other spies saw the "Problems".
“Be ye therefore perfect, even as your Father which is in heaven is perfect.” – Matthew 5:48
God wants us to be perfect in all things. In our behaviors, attitude, relationship with others, and in our knowledge of good and bad. But, obviously, many like to hide under the notion that we are people created in flesh and so we cannot be perfect. This is not true, God Himself want to perfect us.
“But where shall wisdom be found? and where is the place of understanding? Man knoweth not the price thereof; neither is it found in the land of the living. The depth saith, It is not in me: and the sea saith, It is not with me. It cannot be gotten for gold, neither shall silver be weighed for the price thereof.” – Job 28:12-15
The Byproduct of Unbelief is Disobedience And Rebellion
"For who, having heard, rebelled? Indeed, was it not all who came out of Egypt, led by Moses? Now with whom was He angry forty years? Was it not with those who sinned, whose corpses fell in the wilderness? And to whom did He swear that they would not enter His rest, but to those who did not obey? So we see that they could not enter in because of unbelief." - Hebrews 3:16-19 (NKJV)
Unbelief is always that very hinders between a person and the blessings of God. Unbelief to some is like a sickness that needs to be cured.