The institution of the sabbatical year was designed, To shew what a plentiful land that was, into which God was bringing them, that so numerous a people could have rich maintenance out of the products of so small a country, without foreign trade, and yet could spare the increase of every seventh year. To teach them a confidence in the Divine Providence, while they did their duty, That as the sixth day's manna served for two days meat, so the sixth year's increase should serve for two years subsistence.
Related Commentaries of Exodus 23:10
Exodus 23:10
10 And six years thou shalt sow thy land, and shalt gather in the fruits thereof: