Every year (kat eto). 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 ( Exodus 23:14-17 ; Exodus 34:23 ; Deuteronomy 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.