Jesus is about 30 years old, and ready to begin his ministry. The question is: Does he really know what he is here to do? Has he understood what his mission will be? The phrase "time will tell" isn't going to be helpful. Like a good teacher tests her pupils to learn what they know, Jesus gets a test to see what he knows about the mission.
The first step to persevering through hardship and trial is to remember the truth of the gospel. But there are practical things we can do daily as we endure.