Isaiah 28:27-28

27, 28. So in the harvest. The harvester treats the different crops raised in the same common-sense way. He carefully beats with a stick, or rod, the smaller, finer seeds; over these he does not foolishly send the threshing wain. Nor over the larger grains does he drive the cart, or the oxen, or the rolling rough thresher, interminably. He uses these till their proper work is done, and then ceases. Now, Israel is God’s field and God’s threshing floor. But all are not alike roughly threshed. God discriminates the kind of seed to be planted and harvested. He adapts his method of separation to each. So right methods are employed in the distribution of discipline and punishment. If this treatment fails of its purpose, the responsibility is placed where it belongs. He strikes some with a rod; others, who need it, he threshes roughly with the wain; but, unless deserved, he does neither interminably.