Mark 2

"As He passed by, He saw Levi the son of Alphaeus sitting at the tax office. And He said to him, “Follow Me.” So he arose and followed Him...When Jesus heard it, He said to them, “Those who are well have no need of a physician, but those who are sick. I did not come to call the righteous, but sinners, to repentance.” vv.14,17

Read chapter 2.
Levi is also the same name Matthew and who also is the one that wrote the gospel of Matthew.  This name change could be because of his change after he met the Lord to take on a new meaning of who he was. Well Levi being a tax collector showed that he was an outcast in Israel.  This was considered a traitor's job since they were working for the Roman government collecting money from the Israelites.  One would have to take this job if they were excommunicated by the Pharisees most likely and was their only means at making money (for women it was becoming a prostitute).  Notice that it's with only two words that Jesus speaks and Levi gets up and follows.  How powerful His words are!  Jesus didn't have to convince him or make a big show out of calling Levi.  And just as Jesus says later in verse 17 that it's not the healthy who need a doctor but the sick so we need to remember that.  Jesus didn't come for the "righteous" but to the sinners.  We are all sinners and all need a Savior.  People always send or give me things that have to do with Jesus.  I appreciate it but I also think that they should share this gift of Jesus to someone who doesn't know Him yet more than for me.  What simple ways has Christ spoken to you that have made you move?  Share with someone who doesn't know about Christ, the Doctor, the Savior.