Albert Barnes on Matthew 9:10

And it came to pass, as Jesus sat at meat in the house. This feast was given to him by Levi, or Matthew, Lk 5:29. This is another circumstance favourable to Matthew, but omitted by him, and recorded by Luke; showing, also, that the apostles were averse to praising themselves. To receive Christ hospitably and kindly was a commendable act, and it strongly evinces Matthew's freedom from ostentation that he has supposed the fact. It thus illustrates the command of the Saviour, as recorded by himself, Mt 6:1-4.

At meat. At the table, at supper.