Luke 2:23

(It is recorded in the law of the Lord [Ex. 13:2, 12] that every firstborn male child be considered holy [i.e., specially dedicated] to the Lord.)

Hebrews 12:23

and to the church of the firstborn ones [i.e., those who have received an inheritance from their Father], whose names are recorded in heaven. [See Luke 10:20]. [You have come] to God, who is the Judge of all people, and to the spirits of righteous people who have become [morally] perfect [i.e., that great company of God's people who have gone on to their heavenly reward],

Treasury of Scripture Knowledge

Summary

Sanctify unto me all the firstborn, whatsoever openeth the womb among the children of Israel, both of man and of beast: it is mine.

Bible References

Sanctify

Luke 2:23
(It is recorded in the law of the Lord [Ex. 13:2, 12] that every firstborn male child be considered holy [i.e., specially dedicated] to the Lord.)
Hebrews 12:23
and to the church of the firstborn ones [i.e., those who have received an inheritance from their Father], whose names are recorded in heaven. [See Luke 10:20]. [You have come] to God, who is the Judge of all people, and to the spirits of righteous people who have become [morally] perfect [i.e., that great company of God's people who have gone on to their heavenly reward],