For if they escaped not who refused him that spake on earth, much more shall not we escape, if we turn away from Him that speaketh from heaven -Hebrews 12:25

When Moses spake in God’s name, it was no light thing to refuse such an ambassador. Still, Moses was but a man. Though clothed with divine authority, yet he was but a man and a servant of God. But Jesus Christ is God by nature. See that ye refuse not Him who is of heavenly origin, who came from heaven, who is clothed with such divine powers, that every word He speaks is virtually spoken from heaven, and who, being now in heaven, speaks through His ever living gospel directly out of the excellent glory. Regard ye this, I pray you, and remember well the parable which Jesus gave. A certain man planted a vineyard, and let it out to husbandmen, and when the time came that he should receive the fruit he sent a servant, and they stoned him. He sent another, and they beat him. He sent another, and they maltreated him. After he had thus sent many of his servants, and the dressers of the vineyard had incurred his high displeasure by the shameful way in which they had treated the servants, he sent his own son, and he said, “They will reverence my son.” It was the highest degree of guilt when they said, “This is the heir; let us kill him, that the inheritance may be ours.” Then they took him and killed him, and threw him out of the vineyard. You know how the Saviour was treated by the sons of men; but here is the point I aim at; it is this: to reject Jesus Christ, to refuse Him, to refuse merely His gospel, if He did not speak in it, might not be so high a misdemeanour, but to refuse Him!-I don’t know how it is, but my heart feels very heavy, even to sinking, at the thought that any man here should be able to refuse Christ, the Son of God, the Everlasting and the ever Blessed…I cannot fashion an excuse for any of you, if you, after having heard the gospel, be cast into hell, I dare not think that its utmost pains will be too severe for so high an insult to such wondrous love. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3492.cfm