1 Peter 1:24 - Coke's Commentary on the Holy Bible

For all flesh is as grass, &c.— Flesh is often, by a common figure, put for man: but perhaps the apostle here used the word to intimate that he meant the body of man, frail and short-lived like the tender herb; by way of opposition to the soul, which he considered as incorruptible. All the glory of man, means every thing wherein men pride themselves, or which renders them admired or illustrious;—beauty, strength, learning, eloquence, titles, riches, and honours: all these are only like a fair flower, which looks beautiful for a little while, but soon fades and withers away. See James 1:10-11 and Isaiah 40:6-8 the place from whence St. Peter quoted these words.