Trusting That God Is Seeking Our Good

Our task is to be reconciled to God, and to reconcile to God as many people as we can. This is not a simple task, because people do not know God and are afraid of Him.
All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation: that God was reconciling the world to himself in Christ, not counting men’s sins against them. And he has committed to us the message of reconciliation.
We are therefore Christ’s ambassadors, as though God were making his appeal through us. We implore you on Christ’s behalf: Be reconciled to God. God made him who had no sin to be sin for us, so that in him we might become the righteousness of God. (II Corinthians 5:18-21)
"In Him we might become the righteousness of God" does not mean that we are righteous because we have been identified with Christ, but that Christ makes us a new creation of righteous behavior.
By "all this is from God" the Apostle Paul is referring to our being made a new creation in Christ. By a "new creation" Paul means exactly that. Our redemption through Christ does infinitely more than reform our character. It penetrates every aspect of what we are (and in the Day of Resurrection our body will be included) so that nothing of the old nature remains. All has been made new and all is of Christ.
In the beginning, Satan sought to turn Adam and Eve against God by implying that God withheld wisdom from them, not caring that this put limitations on them. The idea is that God is mean, and Satan, our friend, has come to bless us with the knowledge of good and evil.
As generation has followed generation of people, this mistrust of God has increased until people are afraid of God and do not trust God.