Luke 1:5 introduces Zechariah as being of the course of Abijah, which Luke 1:8 then shows him serving in the temple.

1 Chronicles 24:19 describes the ordering of priestly services in the temple, the same system Zechariah followed when he entered to serve.

2 Chronicles 8:14 records Solomon appointing priestly courses per David's order — the very arrangement under which Zechariah later ministered.

2 Chronicles 31:2 shows Hezekiah restoring the priestly courses after neglect — the same system Zechariah served in during Herod's reign.

Ezra 6:18 recounts setting priests in their divisions after the exile — the same course system Zechariah belonged to centuries later.

Hebrews 9:6 describes priests regularly entering the first section to perform duties, providing the background for Zechariah's routine service.

Exodus 28:1 establishes the Aaronic priesthood—the same order Zechariah belongs to as a priest serving in the temple.

1 Chronicles 24:2 explains Nadab and Abihu's death left only Eleazar and Ithamar, establishing the two priestly lines from which the courses later formed.

Numbers 18 outlines the duties and portions of priests—the service Zechariah carries out as a priest.