Answering media charges of scandal and impropriety, the guilty politician responded with the plea, "I have no recollection of those events". It was yet another attempt of a public figure to apply a strategy called "plausible deniability". This is when individuals try to create a personal safety net for themselves by seeking to convince others that they had no knowledge of the events in question. Someone else gets blamed and becomes the scapegoat for the guilty person's wrongs.
Sometimes Christians have their own kind of plausible deniability. We claim ignorance of our wrong behavior, rationalize, or blame others - but God knows the truth. The Bible tells us: "Man looks at the outward appearance, but the Lord looks at the heart" (1 Sam. 16:7). This is true whether the heart is pure or if it's a corrupt heart robed in false claims of innocence. We may fool others who see us only on the outside, but God sees the reality of our hearts - whether good or bad.
It is wise, therefore, to humbly confess our faults to the Lord. He desire that we admit the truth (Ps. 51:6). The only way to escape the sin and restore our fellowship with God is to acknowledge and confess it to Him (Ps. 51:3-4). We may successfully fool others, but God knows our hearts.