Luke 7:29
All the people, even the tax collectors, when they heard Jesus's words, acknowledged that God's way was right, because they had been baptized by John — the response to Jesus' commendation of John: the people who had been baptized by John acknowledged God's justice (edikaiōsan, declared righteous, vindicated). The tax collectors are specifically mentioned — the unexpected participants in John's baptism who now confirm its validity by their response to Jesus.