'Thoroughly' in the Bible

For we write you nothing other than what you read and understand [there is no double meaning in what we say]. And I hope you will [accurately] understand [divine things] until the end;

Therefore, since we know the fear of the Lord [and understand the importance of obedience and worship], we persuade people [to be reconciled to Him]. But we are plainly known to God [He knows everything about us]; and I hope that we are plainly known also in your consciences [your God-given discernment].

for Titus welcomed our request, and, being thoroughly in earnest, comes to you of his own free will.

Test and evaluate yourselves to see whether you are in the faith and living your lives as [committed] believers. Examine yourselves [not me]! Or do you not recognize this about yourselves [by an ongoing experience] that Jesus Christ is in you—unless indeed you fail the test and are rejected as counterfeit?