King James Bible
"And it came to pass, that, as soon as the days of his ministration were accomplished, he departed to his own house."
Zechariah completes his priestly service rotation at the Jerusalem temple, likely a one-week period assigned to his division of Abijah. Despite being struck mute for his disbelief of Gabriel's announcement, he fulfills his sacred duties before leaving. Zechariah returns to his home in the hill country of Judea, carrying the secret of Elizabeth's coming pregnancy. This departure marks the transition from public temple service to the private fulfillment of God's promise in his personal life.