St. Thomas Aquinas: "[The believer] must not give assent to a prelate who preaches against the faith"

St. Thomas Aquinas, Scriptum, III, d.25, q.2, a.1, qla 4, ad 3:

‘[The believer] must not give assent to a prelate who preaches against the faith…. The subordinate is not totally excused by his ignorance. In fact, the habitus of faith inclines him against such preaching because that habitus necessarily teaches whatever leads to salvation. Also, because one must not give credence too easily to every spirit, one should not give assent to strange preaching but should seek further information or simply entrust oneself to God without seeking to venture into the secrets of God beyond one’s capacities.’

[Source, note 78]