…he that believeth not the Son shall not see life; but the wrath of God abideth on him. – John 3:36

Who is the unhappy man spoken of here? Is he a person to be met with only once in a century? Must we search the crowds through and through to find an individual in this miserable plight? Ah! no, the persons who are here spoken of are common. They abound even in our holy assemblies. They are to be met with by thousands in our streets. Alas, alas! they form the vast majority of the world’s population. Jesus Christ, out of infinite mercy, has come into the world, has taken upon Himself our nature, and in that nature has suffered the just for the unjust, to bring us to God. By reason of His sufferings, the Gospel message is now proclaimed to all men, and they are honestly assured that, “Whosoever believes in Him shall not perish, but have everlasting life.”

Jesus has come unto His own, and His own have not received Him, the Jewish race remains unbelieving. While the Gentiles, to whom He was to be a light, prefer to sit in darkness and reject His brightness. The persons here spoken of are those who believe not the Son of God. They hear the Gospel but refuse obedience to its command. Let it not be imagined that these individuals are necessarily avowed skeptics, for many of them believe much of the revealed truth. They believe the Bible to be the Word of God. They believe there is a God. They believe that Jesus Christ is come into the world as a Savior. They believe the doctrine of election, but they have not the faith of God’s elect. They swear by final perseverance but persevere in unbelief. They believe most of the doctrines which cluster around the cross. They accept in creed the truths that are assuredly believed among us, but they have not received that faithful saying, worthy of all acceptation, that Christ Jesus came into the world to save sinners. At any rate, they have not received it personally and practically for their souls’ salvation. Alas! they may do this, but yet the wrath of God abides on them, if they believe not the Son of God. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1012.cfm