What does John 3:33 mean?

Only Jesus came from heaven to earth (John 3:13). For that reason, there is no other valid source of spiritual truth (John 3:12). Jesus brings us knowledge which is far superior to any other teacher or any other claim (John 3:31–32). However, most people will not accept it (Matthew 7:14). John previously used an exaggeration called hyperbole by saying that "nobody" accepts Jesus' message (John 3:32). Here, he puts this in context. Accepting Jesus as the Light (John 1:9–10) means admitting our sin (John 3:19). Rejecting Christ means rejecting God (1 John 5:10). Some will accept, but only those willing to admit that God is correct.

However, those who do accept Jesus are accepting God (John 3:16). Such persons "set their seal" to the gospel, the ancient equivalent of a signature. Those who express faith in Christ are fully, officially investing their trust in Him alone. This leads to eternal life, as well as spiritual growth (John 1:12). A person cannot truly understand spiritual things without this salvation (1 Corinthians 2:14). Repeatedly, the Bible explains that the only way to be saved is through Jesus Christ (John 3:18, 36; 14:6).