Hebrew Shmita, "release." The seventh year in the cycle of Israel's agricultural and civic life, commanded in Exodus 23:10-11, Leviticus 25:1-7, and Deuteronomy 15:1-18. Three commands define the sabbatical year: (1) The land rests — no sowing, pruning, or harvesting; what grew on its own was available to the poor and wild animals; (2) Debts released — any debt owed between fellow Israelites was to be forgiven; (3) Slaves freed — any Hebrew who had been sold into servitude was to be released with generous provision. The Jubilee (every 50th year) extended these principles to a greater release (Leviticus 25:8-55).
The sabbatical year is one of Scripture's most radical social-economic institutions. Four observations. (1) Trust in God. Letting the land lie fallow for a year required enormous faith — God promised the sixth year's harvest would be sufficient for three years (Leviticus 25:20-22). This is the agricultural version of the Sabbath principle: one day in seven, one year in seven, one year in fifty — rest is hardwired into God's economy. (2) Prevention of multigenerational poverty. By releasing debts every seven years and slaves every seventh year, the sabbatical year prevented the permanent class of indentured poor that developed in other ancient economies. Every seventh year was a reset. (3) Largely ignored by Israel. 2 Chronicles 36:21 explicitly links the 70-year Babylonian exile to Israel's failure to keep the sabbatical years — "to fulfill the word of the LORD by the mouth of Jeremiah, until the land had enjoyed its Sabbaths. All the days that it lay desolate it kept Sabbath, to fulfill seventy years." The seventy years of exile equaled the seventy sabbatical years Israel had skipped over 490 years. God was collecting unpaid rest. (4) Messianic fulfillment. Jesus opened His public ministry by reading Isaiah 61: "to proclaim the year of the LORD's favor" (Luke 4:19) — the final Jubilee where the oppressed are released, debts are forgiven, the captives set free. The cross is the great Shmita: our debt to God released forever.