The Parable of the Lost Sheep
15 1 Now all the tax collectors and sinners were coming close to him to hear him. 2 The Pharisees and the scribes murmured, saying, “This man welcomes sinners, and eats with them.” 3 He told them this parable. 4 “Which of you men, if you had one hundred sheep, and lost one of them, wouldn’t leave the ninety-nine in the wilderness, and go after the one that was lost, until he found it? 5 When he has found it, he carries it on his shoulders, rejoicing. 6 When he comes home, he calls together his friends and his neighbors, saying to them, ‘Rejoice with me, for I have found my sheep which was lost!’ 7 I tell you that even so there will be more joy in heaven over one sinner who repents, than over ninety-nine righteous people who need no repentance.
The Parable of the Lost Coin
8 Or what woman, if she had ten drachma  coins, if she lost one drachma coin, wouldn’t light a lamp, sweep the house, and seek diligently until she found it? 9 When she has found it, she calls together her friends and neighbors, saying, ‘Rejoice with me, for I have found the drachma which I had lost.’ 10 Even so, I tell you, there is joy in the presence of the angels of God over one sinner repenting.”
15:8 A drachma coin was worth about 2 days wages for an agricultural laborer.