Most believers have the wrong idea about sin. They have no problem assigning the title of “sinner” to a murderer or drunkard, et cetera, but those of us who are respectable citizens, what about us? Most of us would probably think that sin has not very much to do with us, at least not like those criminals we see on the News or read about in the Newspapers. However, the word ἁμαρτία does away with that hypocrisy because it brings us face to face with what sin really is.
18 Now the birth of Jesus Christ was as follows: when His mother Mary had been betrothed to Joseph, before they came together she was found to be with child by the Holy Spirit. 19 And Joseph her husband, being a righteous man and not wanting to disgrace her, planned to send her away secretly. 20 But when he had considered this, behold, an angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, do not be afraid to take Mary as your wife; for the Child who has been conceived in her is of the Holy Spirit. 21 She will bear a Son; and you shall call His name Jesus, for He will save His people from their sins.” Matthew 1:18-21 (NASB)
In the passage above, the word “sins” translates the noun ἁμαρτιῶν, which is the Genitive, Plural of ἁμαρτία (hamartia), from the verb ἁμαρτάνω (hamartanō), which means, “to miss the mark.”