Hebrews 9:7

7.For himself and for the errors of the people, or for his own and the ignorances of the people. As the verb |shagag|, means in Hebrew to err, to mistake, so |shgagah|, derived from it, properly denotes error, or mistake; but yet it is generally taken for any kind of sin; and doubtless we never sin except when deceived by the allurements of Satan. The Apostle does not understand by it mere ignorance, as they say, but, on the contrary, he includes also voluntary sins; but as I have already said, no sin is free from error or ignorance; for however knowingly and willfully any one may sin, yet it must be that he is blinded by his lust, so that he does not judge rightly, or rather he forgets himself and God; for men never deliberately rush headlong into ruin, but being entangled in the deceptions of Satan, they lose the power of judging rightly. (144)

The word rendered “errors,” literally means “ignorances,” and so some render it “sins of ignorance;” but it is used in the Apocrypha as designating sins in general; and Grotius refers to Tobit 3:3. And that it means sins of all kinds is evident from the account given in Leviticus 16:1 of the atonement made on the annual man, says Estius, “is ignorant; and all sins proceed from error in judgement.” Hence it seems, sins were called ignorances. — Ed.