Birth @ As soon as a child was born it was washed, and rubbed with salt Ezekiel:16:4), and then swathed with bandages Job:38:9; Luke:2:7Luke:2:12). A Hebrew mother remained forty days in seclusion after the birth of a son, and after the birth of a daughter double that number of days. At the close of that period she entered into the tabernacle or temple and offered up a sacrifice of purification Leviticus:12:1-8; Luke:2:22). A son was circumcised on the eighth day after his birth, being thereby consecrated to God Genesis:17:10-12; comp. Romans:4:11). Seasons of misfortune are likened to the pains of a woman in travail, and seasons of prosperity to the joy that succeeds child-birth Isaiah:13:8; Jeremiah:4:31; John:16:21-22). The natural birth is referred to as the emblem of the new birth John:3:3-8; Galatians:6:15; Titus:3:5, etc.).
Birth-day @ The observance of birth-days was common in early times Job:1:4Job:1:13, 18). They were specially celebrated in the land of Egypt Genesis: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 Matthew:14:6).
Birthright @ (1.) This word denotes the special privileges and advantages belonging to the first-born son among the Jews. He became the priest of the family. Thus Reuben was the first-born of the patriarchs, and so the priesthood of the tribes belonged to him. That honour was, however, transferred by God from Reuben to Levi Numbers:3:12-13Numbers:8:18). (2.) The first-born son had allotted to him also a double portion of the paternal inheritance Deuteronomy:21:15-17). Reuben was, because of his undutiful conduct, deprived of his birth-right Genesis:49:4; 1Chronicles:5:1). Esau transferred his birth-right to Jacob Genesis:25:33). (3.) The first-born inherited the judicial authority of his father, whatever it might be ( 2Chronicals:21:3). By divine appointment, however, David excluded Adonijah in favour of Solomon. (4.) The Jews attached a sacred importance to the rank of "first-born" and "first-begotten" as applied to the Messiah Romans:8:29; Colossians:1:18; Hebrews:1:4-6). As first-born he has an inheritance superior to his brethren, and is the alone true priest.