Charles H. Spurgeon on Psalms 31:22

I said in my haste, I am cut off from before thine eyes: —i.e., Thou hast quite forsaken me, and I must not expect to be looked upon or regarded by thee any more. I shall perish one day by the hand of Saul, and so be cut off from before thine eyes, be ruined while thou lookest on 1Sa 27:1. This he said in his flight (so some read it), which notes the distress of his affairs: Saul was just at his back, and ready to seize him, which made the temptation strong; in his haste (so we read it), which notes the disturbance and discomposure of his mind, which made the temptation surprising, so that it found him off his guard. Note, it is a common thing to speak amiss, when we speak in haste and without consideration; but what we speak amiss in haste, we must repent of at leisure, particularly that which we have spoken distrustfully of God. Matthew Henry.