18 Grk “they”; the referent is unspecified but is probably the crowd in general, who would have no great love for a man like Zacchaeus who had enriched himself many times over at their expense.
19 This term is used only twice in the NT, both times in Luke (here and 15:2) and has negative connotations both times ( διαγογγύζω). The participle λέγοντες (legontes) is redundant in contemporary English and has not been translated.
20 Being the guest of a man who is a sinner was a common complaint about Jesus: Luke 5:31–32; 7:37–50; 15:1–2.

In other versions

And when they saw it, they all grumbled, “He has gone in to be the guest of a man who is a sinner.”

All the people saw this and began to mutter, “He has gone to be the guest of a sinner.”

All who saw it began to complain, “He’s gone to stay with a sinful man.”

But the people were displeased. “He has gone to be the guest of a notorious sinner,” they grumbled.

And when they saw it, they all began to complain, saying, “He has gone in to find lodging with a man who is a sinner!”

And when they saw it, they all murmured, saying, That he was gone to be guest with a man that is a sinner.

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