Luke 15

In a way we have very little of Jesus' teaching recorded.

If you had a harmony of the gospels and you wanted to read out Our Lord's teaching, I wonder how long it would take. I might Google that.

Given that, it is remarkable that in Luke 15 we have three rather similar parables, each making essentially the same main point: v7, v10, v32.

Jesus rightly welcomes sinners and eats with them. He has come to seek and save the lost. You should get on board with that mission and rejoice over every sinner who repents.