Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
The observance of birth-days was common in early times (Job 1:4, 13, 18). They were specially celebrated in the land of Egypt (Gen. 40:20). There is no recorded instance in Scripture of the celebration of birth-days among the Jews. On the occasion of Herod's birth-day John the Baptist was beheaded (Mt. 14:6).