In conversation with someone recently, it hit me with more clarity than ever before that we cannot be assured of our grasp of the truth by grasping harder to what we think is true - this only makes us stubborn and narrow. Our certainty comes from letting go entirely of everything but Christ. Our grasp is never strong enough or pure enough to keep us from error unless we are holding on to NOTHING but Him.

We must freely choose to let go of the ideas and understandings to which we cling for security and become like little children - not in the sense of becoming childish and oblivious, but rather childlike and trusting in the face of our realities because we know we are loved. Perfect love casts out fear; perfect love implies perfect trust. But God will not demand our trust or force us to let go. And if we will not let go, we continue to be weighed down and enslaved by all to which we cling.
It is a false security, because our real security is Him. It is trust in His promise of salvation, relying on grace, not on the things we have learned, the consolations we have received, the feats we have accomplished (even if these are of the supernatural variety).

"My grace is sufficient for you, for power is made perfect in weakness."
2 Cor: 12
"For we also are weak in him: but we shall live with him by the power of God towards you. "
2 Cor:13