it came to pass.. Hebraism. See note on Luke 1:5.
while he executed, &c.. in (Greek. en. App-104.) executing. Greek. hierateuo, to act as. priest. Not peculiar to Biblical Greek, but found often in the Papyri.
Related Commentaries of Luke 1:8
Luke 1:8
8 And it came to pass, that while he executed the priest's office before God in the order of his course,