God's works are never without reason

We must take heed of thinking that God doth any thing without cause; No, the wise God doth every thing in number, weight and measure; he doth everything upon great reason, upon the highest reason. God will not do the lowest thing, but upon the height of reason, he doth the least thing upon great reason than the greatest politiican in the world do the greatest. Therefore God had reason, important reason to give Job up to be afflicted. He did it for the trial of Job, he did it for the magnifying of his free grace, and the graces of his free Spirit in his weak creature, he did it that Job might be set up as an example of patience, he did it to discover the slander of the devil; therefore he did it for strong reasons; it was not without cause in reference unto God himself. [Joseph Caryl]