"But now I tell it unto you, and ye are blessed, not because of your iniquity, neither your hearts of unbelief; for verily some of you are guilty before me, but I will be merciful unto your weakness.
Therefore, be ye strong from henceforth; fear not, for the kingdom is yours."
Doctrine and Covenants 38:14-15
I think this is another scripture kind of like Christ and the woman taken in adultery. He is talking to people who do have iniquity, unbelief, and guilt... like all of us. ...but he says that he will have mercy unto our weakness... meaning perhaps that he understands what things are easy and hard for us, and he will take that into account. Not that we don't have to do the test anyway, but that he'll work with us more and tutor us on the parts that we have trouble with. And then he says... be ye strong from henceforth... because he is being merciful to us, and lending us his strength, but asking us to do all that we can on our side, knowing that he is working for us on the other... and fear not, which is a phrase that it is always nice to hear. It is easy to get overwhelmed and afraid. Fortunately we have God there to fight the monsters we can't fight alone, and we WILL be able to make it across the drawbridge to the Castle and the Kingdom where we belong.