Does Intellectual Error Block Sanctification?

QUESTION: Do you think any person can be entirely sanctified and still assert that the apostles were not regenerated till Pentecost?

ANSWER: Yes. This is an error of the head and not of the heart. If freedom from intellectual error were a condition of obtaining purity of heart, no one would obtain that blessing, for we all harbor errors of this sort.

— Steele's Answers pp. 66, 67.