Evidently Zacchaeus was married and perhaps had children. Perhaps more than one person became a Christian on this occasion. The disciples were with Him. They, too, very likely, grumbled because this was so unusual. But the love of Jesus disregards man's grumbling.
True faith produces fruits.
Zacchaeus was rich in money, maybe became poor and he had been poor in spiritual matters but became rich. This word always draws our attention to something important. In verse 2 it draws attention to the conversion of Zacchaeus and in verse 8 to the fruit of his faith. It describes mankind lost in sin and death. The Bible tells us about remarkable conversions.