Therefore, since we are receiving a kingdom which cannot be shaken, let us have grace, by which we may serve God acceptably with reverence and godly fear. -Hebrews 12:28

Sirs, you may say what you will about what you dream you have felt, you may write what you please about what you fancy you have experienced; but if your own outward life be unjust, unholy, ungenerous, and unloving, you shall find no credit among us as to your being in Christ: “Without holiness, no man shall see the Lord.” The moment you know a man who is drunk on a Saturday night, and then enjoys So-and-so’s preaching on a Sunday; the moment you know a man who can tell you what a child of God should be, and then appears himself exactly what he should not be, just quit his company, and let him go to his own place, and where that is, Judas can tell you. Oh, beware of such high-fliers, with their waxen wings, mounting up to the very sun,-how great shall be their fall when He that searches all hearts shall open the book, and say, “I was an hungred, and ye gave Me no meat; I was thirsty, and ye gave Me no drink. Inasmuch as ye did it not. to one of the least of these My brethren, ye did it not to Me.”

Heart-work, carried out afterwards into life-work,-this is what the Lord wants. You may perish as well with true doctrines as with false, if you pervert the true doctrine into licentiousness. You may to go to hell by the cross as surely as you may by the theatre, or by the vilest of sin. You may perish with the name of Jesus on you lips, and with a sound creed sealed on your very bosom, for “except a man be born again, he cannot see the kingdom of God.” “Be not deceived; God is not mocked; for whatsoever a man soweth, that shall he also reap.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2902.cfm