The fact that we have trying experiences doesn't mean that we are on trial. How could man, God's own image, His reflection, be on trial? It's not possible. Man cannot be put on trial any more than God can be put on trial.
To be sure, there are many kinds of trials, including those relating to law. And in human experience, people are sometimes put on trial in a court of law. But as a fact of spiritual reality, man is never on trial, and this understanding can be invaluable as we face trials in day-to-day life, as we face challenges that would have us believe we're separate from God's care.
Noah Webster's American Dictionary of the English Language gives this definition for trials of experience: "suffering that puts strength, patience or faith to the test; afflictions or temptations that exercise and prove the graces or virtues of men." At such times, wholehearted reliance on God, who is Love and who never afflicts His children or allows them to suffer, can provide sure victory.