7 Bible Verses about Knowledge, Of Sin

(For when the [unconverted] Gentiles, who do not have the law of Moses, instinctively practice [some of] its requirements, they become their own lawmakers, even though they do not have the law of Moses. In doing this [i.e., practicing some of the requirements of the law of Moses], they demonstrate that these requirements are written in their hearts. Their conscience tells them this, and their thoughts alternately accuse them [of wrongdoing], or else endorse them [for doing right]).

we should draw close [to God] with a sincere heart and a fully assured faith, having had our hearts sprinkled from a guilty conscience [See 9:13-14] and having had our bodies washed with clean water [i.e., in our immersion].

This is because no human being can be considered right with God by [obeying] the requirements of a law. [Note: It is difficult to determine the exact sense in which "law" is used in these verses. It may be law generally, or the law of Moses specifically. See Bruce, pages 52-58]. For the knowledge of what sin is comes from the law of Moses.

For even before the law of Moses, sin was [being committed] in the world. But man is not responsible for [his] sin when there is no law.

What shall we say then? Is the law of Moses sinful? Certainly not! For I would not have known what sin was if it had not been for the law. For [example]; I would not have known [what it meant] to covet [i.e., have a strong desire for what belongs to someone else] except that the law said [Ex. 20:17], "You must not covet."

Yet I am telling you the truth: It will be helpful to you for me to go away. For unless I go, the Helper [i.e., the Holy Spirit] will not come to you. But if I go, I will send Him to you. And when He does come, He will bring conviction to the world regarding sin [i.e., exposing it and producing guilt], regarding what is right [i.e., upholding godly standards], and regarding judgment [i.e., showing that sin condemns]. [The world will be proven guilty] of sin for not believing in me.read more.
[It will be shown] what is right because I am going [back] to the Father and you will not see me anymore. [And it will be shown] judgment, because the ruler of this world [i.e., Satan. See 12:31] has been condemned [i.e., by Jesus' death and resurrection].

for our Gospel came to you, not merely in words, but also in power, in [a demonstration of] the Holy Spirit [See I Cor. 2:4] and with ["our" or "your"] deep conviction [of its truth]. You people know what kind of men we were while living among you for your benefit.