The same was true of those who came his way needing hospitality. Job made himself personally responsible for each one and treated them as those sent to him by God.
The rendering of the KJV for verse 31 is difficult. The context leads us to expect a positive thought – Job’s guests appreciate what he has done for them. The NKJV translates ‘Who is there that has not been satisfied with his meat?’ in line with many other versions.