A truthful and honest spirit is a valuable asset. So much changes in life, even our own understanding requires repentance sometimes. As a Christian, I am obligated to truth, but truth is also subjective in nature. This equates to a personal relationship with God and how we relate to that relationship as individuals. We all fall short, so it is expected that we are required to repent from time to time, if only to remain in truth with an honest and truthful spirit.
Allowing ourselves this freedom, enables many things, some of which include love, joy, peace, patience, temperance, and self control. It's like our work out with God as God disciplines and develops us into what we are to become. This is a Hebrews 12 reference. 2 Timothy is correct in that the scriptures are good for instruction, so I tend to take what I read to heart and at least attempt to discern the text and associated implications being made. I fall short of an understanding often enough to acknowledge a need, which amounts to this type of attitude: When I understand it, I'll understand it, and until then I'm called to separate truth from error the best I am able, so I allow myself to walk in the truth I understand to be true.