So Naomi and her daughter in law, Ruth returned from Moab and came to Bethlehem at the beginning of barley harvest. (Ruth 1:22)
God's timing is perfect. They returned at a season when food would be available for a destitute widow and her daughter-in-law. The law of gleaning allowed the poor to gather any stray stalks of grain that were deliberately unharvested so the less fortunate would be provided for. But it was also perfect timing because, most likely, it was only during the harvest season that Boaz regularly visited his fields. This provided an occasion for Ruth and Boaz to meet and develop a relationship and eventually get married.
God is the Master of time. His plans always take place never a moment too soon or a second too late, but at the appropriate time He brings about His perfect will. No one can thwart His plan, even the plan of redemption. "But when the fullness of the time came, God sent His Son, born of a woman , born under the law." Galatians 4:4
