Leviticus 19:24
But in the fourth year all the fruit thereof shall be holy to praise the Lord withal.
Cross-reference
Leviticus 22:27 requires a seven-day waiting period before offering newborn animals — analogous to the three-year wait before offering fruit in Leviticus 19:24.
Numbers 18:12 assigns firstfruits (oil, wine, grain) to the priests — the same principle of dedicating first produce to God.
Numbers 18:13 continues the firstfruits law — the first ripe fruits are given to the priests, mirroring the fourth-year fruit as an offering.
Deuteronomy 18:4 commands giving firstfruits of grain, wine, oil to priests — same principle as the fourth-year fruit being a holy offering.
Deuteronomy 12:18 commands eating tithes at the sanctuary — a different treatment from the fourth-year fruit which is an offering, not eaten by the owner.
Proverbs 3:9 calls for honoring God with firstfruits of crops — the same principle applied specifically to fruit trees in Leviticus 19:24.
Deuteronomy 12:17 restricts eating tithes and offerings at home — similarly, the fourth-year fruit is holy and not for ordinary consumption.
In Joshua 6:19, the same phrase 'holy to the LORD' designates spoils of war, paralleling the dedication of fourth-year fruit.