Matthew 9:9 says, And as Jesus passed forth from thence, he saw a man, named Matthew, sitting at the receipt of custom: and he saith unto him, Follow me. And he arose, and followed him.  Jesus was still calling His disciples, and when He saw Matthew, a tax collector, Jesus told him to come and follow Him.  Jesus first called fishermen and now He called a tax collector, who was despised by most.  Matthew had to have had faith in Jesus, because he arose and followed Him.  Verse ten states, And it came to pass, as Jesus sat at meat in the house, behold, many publicans and sinners came and sat down with him and his disciples.  We can assume that this was Matthew's house, but whatever house it was, publicans and sinners joined Jesus and His disciples for the meal.  Jesus will always invite even the vilest of sinners to join Him by faith in His sacrifice for salvation.  People must come to Jesus just as they are, and He will willingly accept them.  Verse eleven says, And when the Pharisees saw it, they said unto his disciples, Why eateth your Master with publicans and sinners?  Some of the religious leaders, Pharisees, questioned the disciples about Jesus eating with publicans and sinners.  The Pharisees took pride in believing that they were morally superior to other people because of their strict adherence to God's law.  They did no go to Jesus to get an answer to their question.  Those who would attempt to discredit Jesus today will often attempt to do so by getting His followers or disciples to question what Jesus teaches.   Verse twelve declares, But when Jesus heard that, he said unto them, They that be whole need not a physician, but they that are sick.  Though the Pharisees did not ask their question to Jesus, He heard what they were asking.  We can never question God, whether directly or indirectly, without Him knowing about it.  That is why, if we have a question about God's teachings, we should go to God for the answer.  Jesus said that those who were whole didn't need a physician.  Verse thirteen states, But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.  The Pharisees thought themselves to be the ultimate authority on God's word, but Jesus told them to go and learn what He meant by saying the whole didn't need a physician, but the sick did.  Jesus said that He would have mercy instead of sacrifice and call sinners and not the self-righteous to repentance.  We should never attempt to limit who can come to Jesus for salvation, but instead should reach out to the lost of the world.  We should never become so self righteous that we feel that anyone is unworthy of salvation, no matter how sinful they may be.