Charles H. Spurgeon on Psalms 119:21

The proud. This is a style commonly given to the wicked; because as it is our oldest evil, so is it the strongest and first that strives in our corrupt nature to carry men to transgress the bounds appointed by the Lord. From the time that pride entered into Adam's heart, that he would be higher than God had made him, he spared not to eat of the forbidden tree. And what else is the cause of all transgression, but that man's ignorant pride will have his will preferred to the will of God. William Cowper.