What does Genesis 30:37 mean?
Earlier, Laban convinced Jacob to work for seven years for the right to marry his daughter, Rachel. However, Laban cheated Jacob by switching out his other daughter, Leah, on the wedding night. This led to Jacob being indebted to Laban for another seven years (Genesis 29:18–30). Now, with all of these deals completed and Jacob demanding to be released along with his family, Laban likely believes Jacob has made another bad deal. He has agreed to Jacob's offer that all the non-black goats and non-white sheep born from this point forward will belong to him. To keep those numbers even lower than they would naturally be, Laban has removed all the black sheep and speckled/spotted animals from the main herd. In fact, he has moved them three-day's journey away.Jacob, though, is blessed by the Lord. As Genesis 31:7–12 will make clear, Jacob's plan to claim all the spotted/speckled sheep and goats came from God. How he executes this plan may sound like some kind of folk magic, but it is the process by which God supernaturally blesses Jacob's efforts to get more black sheep and mixed-color animals.
Jacob takes sticks fresh from three specific kinds of trees and strips the bark to reveal the white underneath. This is, in part, a play on words: the Hebrew term for "white" is laban. With God's supernatural blessing, Jacob will use these sticks to influence how many striped, spotted, and speckled animals are born.