Why did Jesus call Zacchaeus by name?

When Jesus called Zacchaeus by name, it exemplified His divine authority and intimate knowledge of those He has chosen. This act reinforces the truth that God knows His people personally. In Zacchaeus’s case, he was unaware of his need for salvation until Christ sought him out. This personal call signifies God's grace and election, as seen in Romans 8:30, where it states, 'Moreover, whom He predestined, these He also called.' This emphasizes that God's calling is purposeful and effectual, leading to salvation.