Deuteronomy 24:5
When a man hath taken a new wife, he shall not go out to war, neither shall he be charged with any business: but he shall be free at home one year, and shall cheer up his wife which he hath taken.
Cross-reference
Deuteronomy 20:7 exempts betrothed men from battle — same principle as here for newlyweds. Direct parallel in war exemption law.
In Proverbs 5:18, the command to rejoice in the wife of your youth directly parallels the OT goal of bringing joy to one's wife.
In Ecclesiastes 9:9, the exhortation to enjoy life with your beloved wife mirrors the OT exemption's purpose of marital joy.
In 1 Corinthians 7:29, Paul advises acting as though married only briefly, contrasting the OT command to focus on bringing joy to a new wife.
In Numbers 1:3, all men 20+ are to be enrolled for war, while Deuteronomy 24:5 grants a year's exemption for newlyweds.
Genesis 2:24 establishes marriage as one flesh — grounds the one-year honeymoon provision in the importance of marital unity.