Trust is like an open door-it is inviting and welcoming. However, depending on whom one opens his door to, trust can result in deeper and more fulfilling relationships, or in pain. However, as Frank Crane says, "You may be deceived if you trust too much, but you will live in torment if you do not trust enough."
Trust is like money: it is saved, given, sometimes stolen. Trustingly lending an item to a friend who never returns it, for instance, means that the friend has betrayed-"stolen"-your trust, and it will be unlikely to return. This can result in future unwillingness to trust others when similar situations arise. Thus trust is also a form of "payment" for the perceived credibility of others.
To trust is to accept, and not to worry. Especially in the context of a religious person putting his trust in God.