Protestants believe in the sufficiency of scripture.
But I would put anyone who asks others to follow himself or his private revelation rather than God in exactly the same bucket and that is why I eschew all doctrine and traditions of men including Calvin and Arminius and seemingly neverending authorities and commentators.
Neither man taught or believed in "personal revelation" or took their doctrine from that . Both men were scholars that drew their doctrine from scripture . That was a part of the issues that the reformers had with Rome..
Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, [that] shall he speak: and he will shew you things to come. He shall glorify me: for he shall receive of mine, and shall shew [it] unto you. All things that the Father hath are mine: therefore said I, that he shall take of mine, and shall shew [it] unto you. John 16:13-15
This is not a promise of 'PERSONAL Revelation' It is a promise of Illumination .I have to honest AG , what I have read in the last couple of days sounds like gnosticism
We have a semantic problem, Rnmomof7. To you, the indwelling Holy Spirit gives illumination which you assert is not the same thing as a personal revelation. We might be able to clear the air better if you would define those terms the way you understand them.