Thanks George71, for your question about these verses:
"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? And when she hath found it, she calleth her friends and her neighbours together, saying, Rejoice with me; for I have found the piece which I had lost. Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth."
First of all this is a lovely scripture about the joy that is amongst believers when a sinner turns to God. I have not looked at this scripture thoroughly and I am not an expert, but I could hazard a guess that the woman is a picture of the Jerusalem that is above, which the true believers are all a part of. The book of Galatians describe her as our mother. Another way to put this same idea is that she is the church of God, the true believers, since we see these also pictured by a woman in Rev 12. The candle and the house both speak of this as well. The house, for example is mentioned in Hebrews: ""But Christ as a son over his own house; whose house are we". Jesus spoke of the believers as his 'friends': "Henceforth I call you not servants; for the servant knoweth not what his lord doeth: but I have called you friends; for all things that I have heard of my Father I have made known unto you." So, the general message seems to be about the believers, seeking the lost. Of course, that would have to be through Christ, since Jesus is the one who comes to seek and to save the lost.