Charles H. Spurgeon on Psalms 32:4

Thy hand. A correcting hand, whereby God scourges and buffets his own children. Now the sense of God's power punishing or correcting, is called God's hand, as 1Sa 5:11. The hand of God was sore at Ekron, because of the ark; and a heavy hand in resemblance, because when men smite they lay their hand heavier than ordinary. Hence, we may note three points of doctrine: first, that all afflictions are God's hand; secondly, that God lays his hand heavily often upon his dear children; thirdly, that God often continues his heavy hand night and day on them. Thomas Taylor.