Charles H. Spurgeon on Psalms 42:10

As with a sword in my bones, mine enemies reproach me. Cruel mockeries cut deeper than the flesh, they reach the soul as though a rapier were introduced between the ribs to prick the heart. If reproaches kill not, yet they are killing, the pain caused is excruciating. The tongue cuts to the bone, and its wounds are hard to cure. While they say daily unto me, Where is thy God? This is the most unkind cut of all, reflecting as it does both upon the Lord's faithfulness and his servant's character. Such was the malice of David's foes, that having thought of the cruel question, they said it, said it daily, repeated it to him, and that for a length, of time; surely the continual yapping of these curs at his heel was enough to madden him, and perhaps would have done so had he not resorted to prayer and made the persecutions of his enemies a plea with his Lord.