{Every year} (kat' etos). This idiom only here in the
N.T., a common Greek construction. Every male was originally
expected to appear at the passover, pentecost, and tabernacles
( Ex 23:14-17  34:23  De 16:16 ). But the Dispersion rendered
that impossible. But pious Palestinian Jews made a point of going
at least to the passover. Mary went with Joseph as a pious habit,
though not required by law to go.