Parables Of Jesus Christ: Seeking The Lost
The self-righteous, hypocritical Pharisees and Scribes often criticized the Saviour for associating with "sinners" (they even blasphemously accused the Saviour Himself of being a sinner - see the Fact Finder question below).
"15:1 Then drew near unto him all the Publicans and sinners for to hear him. 15:2 And the Pharisees and scribes murmured, saying, This man receiveth sinners, and eateth with them." (Luke 15:1-2 KJV)
"Likewise joy shall be in heaven over one sinner that repenteth"
In reply to the Pharisees and scribes, the Messiah's parable of seeking the lost:
"15:3 And he spake this parable unto them, saying, 15:4 What man of you, having an hundred sheep, if he lose one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it?
The "which need no repentance" (as it is translated from the actual Greek) in verse 7 above refers to those who have begun to repent (see Growing In The Grace And Knowledge) and therefore don't need to start something that they already have. It does not mean that there are some who don't have anything to repent of - the Messiah was the only human that has ever lived that needed no repentance, "3:23 For all have sinned, and come short of the glory of God." (Romans 3:23 KJV).
The parable continued with another example:
"15:8 Either what woman having ten pieces of silver, if she lose one piece, doth not light a candle, and sweep the house, and seek diligently till she find it?
Fact Finder: Why did some of the religious authorities accuse the Son of God of being a "sinner"?