…to them that have obtained like precious faith with us through the righteousness of God and our Saviour Jesus Christ… – 2 Peter 1:1

The word “through” in our translation, might, quite as correctly, have been rendered “in”-“faith in the righteousness of our God and our Saviour Jesus Christ.” True faith, then, is a faith in Jesus Christ, but it is a faith in Jesus Christ as divine. That man who believes in Jesus Christ as simply a prophet, as only a great teacher, has not the faith which will save him. Charity would make us hope for many Unitarians, but honesty compels us to condemn them without exception, so far as vital godliness is concerned. It matters not how intelligent may be their conversation, nor how charitable may be their manners, nor how patriotic may be their spirit, if they reject Jesus Christ as very God of very God, we believe they shall without doubt perish everlastingly. Our Lord uttered no dubious words when He said, “He that believeth not shall be damned,” and we must not attempt to be more liberal than the Lord Himself. Little allowance can I make for one who receives Jesus the prophet, and rejects Him as God. It is an atrocious outrage upon common sense for a man to profess to be a believer in Christ at all, if he does not receive His divinity. I would undertake, at any time, to prove to a demonstration, that if Christ were not God, He was the grossest impostor who ever lived. One of two things, He was either divine or a villain… He was the grossest of all deceivers, if He was not “very God of very God.” O beloved, you and I have found no difficulties here; when we have beheld the record of His miracles, when we have listened to the testimony of His divine Father, when we have heard the word of the inspired apostles, when we have felt the majesty of His own divine influence in our own hearts, we have graciously accepted Him as “the Wonderful, the Counsellor, the mighty God, the everlasting Father;” and, as John bear witness of Him and said, “The Word was in the beginning with God, and the Word was God,” even so have we received Him; so that at this day, He that was born of the virgin Mary, Jesus of Nazareth, the king of the Jews, is to us “God over all, blessed for ever.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0551.cfm