Charles H. Spurgeon on Psalms 38:2

Thine arrows. Arrows are (1) swift, (2) secret, (3) sharp (4) killing instruments. They are instruments drawing blood and drinking blood, even unto drunkenness De 32:42; afflictions are like arrows in all these properties. 1. Afflictions often come very speedily, with a glance as an arrow, quick as a thought. 2. Afflictions come suddenly, unexpectedly; an arrow is upon a man afore he is aware, so are afflictions. Though Job saith, the thing he feared came upon him, he looked for this arrow before it came; yet usually afflictions are unlooked for guests, they thrust in upon us when we dream not of them. 3. They come with little noise; an arrow is felt before, or, as soon as it is heard; an arrow flies silently and secretly, stealing upon and wounding a man, unobserved and unseen. Lastly, all afflictions are sharp, and in their own nature killing and deadly. That any have good from them, is from the grace of God, not from their nature. Joseph Caryl.