Trusting another person has to have a certain expectation of failure and thus be combined with a willingness to forgive . Faith comes from God. Our faith is in God. God is the giver of faith and the object of faith. Because of those 2 facts, we need a new perception of what it means to trust people.
People are human, frail, and sinful.
Therefore, we need a realistic type of trust when we choose to trust people. We can trust God totally . He knows what He is doing and has a plan I don't understand right now, so I can keep trusting Him. My life and circumstances are in His hands and under His sovereign control. But when we are let down by people who don't keep their promises or meet our expectations because they are human and fallible, then our trust has to be in God instead of them.