It is important for each person to take to heart what the Bible says. With Israel "their heart was not steadfast toward Him" (Ps 78:37) and they "did not believe in His wonderful works" (:32). The elders "had known all the deeds of the Lord which He had done in Israel" (Jos 24:31). "They quickly forgot His works" (Ps 106:13) "nor were they faithful in His covenant" (Ps 78:37). "The Lord said to Samuel, . . . 'they have rejected me'" (1Sa 8:7). Paul said that "he who rejects this is not rejecting man but God" (1Th 4:8). That is why John says of Jesus that "the Word was God" (Jn 1:1).
A writer on theology wrote that God has placed something in each man's heart to want to know him. Paul said "I count all things to be loss in view of the surpassing value of knowing Christ" (Php 3:8). In man's current state "we see in a mirror dimly" (1Co 13:12). I attended church once with a man I saw recently who told me that he had died during hip replacement surgery and went to heaven and saw his parents and others he knew. His wife prayed for him in the operating room and he returned to life and now gives his testimony at church meetings. When I asked, he explained that even though the people there didn't have earthly bodies you knew who they were. It's as if on earth you see as if in a mirror's reflection, but in heaven "face to face . . . [and] know fully just as I also have been fully known" (13:12). The purpose is to be "increasing in the knowledge of God" (Col 1:10) and have "grace and peace be multiplied in you in the knowledge of God and of Jesus our Lord" (2Pe 1:2). Paul prayed you would "abound still more and more in real knowledge and discernment" (Php 1:9) and that God may give you a "revelation in the knowledge of Him" (Eph 1:17). At the basic level you "come to the knowledge of the truth" (1Ti 2:4). More accurately you "believe and know the truth" (4:3) because you are "to be saved and come to the knowledge" (2:4). It is a "true knowledge" (Col 3:10) by understanding "the grace of God in truth" (1:6). Also, it is "the new self who is being renewed to a true knowledge according to the image of the One who created him" (3:10). We then "attain to . . . knowledge of the Son of God, to a mature man" (Eph 4:13).