Jesus is God in the flesh. He reveals the heart, nature and intentions of God. When you read the gospel narratives through this lens everything changes. Read Mark 2:15-17 from this angle.
“Later, Levi invited Jesus and his disciples to his home as dinner guests, along with many tax collectors and other disreputable sinners. (There were many people of this kind among Jesus’ followers.) But when the teachers of religious law who were Pharisees saw him eating with tax collectors and other sinners, they asked his disciples, ‘Why does he eat with such scum?’ When Jesus heard this, he told them, ‘Healthy people don’t need a doctor—sick people do. I have come to call not those who think they are righteous, but those who know they are sinners.'”
Who you eat with says a lot about you. Eating a meal is one of the most intimate gestures of human life. God chooses to eat with the broken, the outcast, the rejected, the lost and the sick. This is a God who lives in the fray. This is a God who is fearless in the face of pain and need.
The irony of the passage is in the two categories mentioned by Jesus. In reality, there is one category for humanity…the only difference is whether or not one embraces reality. In the words of Paul, “there is no one righteous, not even one” (Rom 3:10). God is saying to us all: come and sit at my table. He is a hospitable God.