John is all about believing in Jesus and his words and keep in love/righteousness. Whoever is doing this honors and believes his Father who sent him and receives the Spirit and eternal life. Some context from GofJohn (emphasis added);
John3
31 He [Jesus] who comes from above is above all. He who is of the earth belongs to the earth and speaks in an earthly way. He who comes from heaven is above all.
32 He bears witness to what he has seen and heard, yet no one receives his testimony.
33 Whoever receives his testimony sets his seal to this, that God is true.
John 6
63 It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life.
John 7
38 Whoever believes in me, as the Scripture has said, 'Out of his heart will flow rivers of living water.'"
39 Now this he said about the Spirit, whom those who believed in him were to receive...
John 14
15 "If you love me, you will keep my commandments.
16 And I will ask the Father, and he will give you another Helper, to be with you forever,
17 even the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him. You know him, for he dwells with you and will be in you.
John 15
12 "This is my commandment, that you love one another as I have loved you.
John 18
37 For this purpose I was born and for this purpose I have come into the world--to bear witness to the truth. Everyone who is of the truth listens to my voice.
John 20
30 Now Jesus did many other signs in the presence of the disciples, which are not written in this book;
31 but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name .