Exodus 13:2 is the direct source of the law quoted here — consecration of every firstborn male to the Lord.

Exodus 13:12-15 adds the command to redeem firstborn sons, explaining the redemption offering Mary and Joseph would make.

Numbers 3:13 explains that firstborn belong to God because He spared them in Egypt, providing the theological basis for the law.

Numbers 18:15 commands redemption of firstborn sons, specifying the payment — the very act Jesus' parents performed.

Exodus 22:29 reinforces the law: 'the firstborn of your sons you shall give to me,' tying the presentation to covenant obligation.

Exodus 34:19 states 'all that opens the womb is mine,' emphasizing God’s claim over firstborn in the covenant renewal.

Numbers 8:16 indicates the Levites are taken instead of the firstborn, showing the substitutionary principle behind redemption.

Numbers 8:17 reaffirms that all firstborn are God’s, linking to the Exodus event and echoing the same consecration principle.