Charles H. Spurgeon on Psalms 119:67

Before I was afflicted I went astray, etc. Not that he wilfully, wickedly, maliciously, and through contempt, departed from his God; this lie denies (Psalms 18:21); but through the weakness of the flesh, the prevalence of corruption, and the force of temptation, and very much through a careless, heedless, and negligent frame of spirit, he got out of the right way, and wandered from it before he was well aware. The word is used of erring through ignorance (Leviticus 5:18). This was in his time of prosperity, when, though he might not, like Jeshurun, wax fat and kick, and forsake and lightly esteem the Rock of his salvation; or fall into temptations and hurtful lusts, and err from the faith, and be pierced with many sorrows; yet he might become inattentive to the duties of religion, and be negligent of them, which is a common case. John Gill.