Friend of sinners
10 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.
11 And when the Pharisees saw it, they said unto his disciples, Why eateth your Master with publicans and sinners?
12 But when Jesus heard that, he said unto them, They that be whole need not a physician, but they that are sick. 13 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. -Matthew 9:10-13 King James Version
14 Then came to him the disciples of John, saying, Why do we and the Pharisees fast oft, but thy disciples fast not? 15 And Jesus said unto them, Can the children of the bride chamber mourn, as long as the bridegroom is with them? but the days will come, when the bridegroom shall be taken from them, and then shall they fast. -Matthew 9:14-15 King James Version
This text once again demonstrates, the same as Matthew 6:16-18, that fasting is a basic fundamental teaching that is done by all.