Because Jesus has come to save, we need to give ourselves to Him completely and believe in Him.

John 12:37-50

37 Though he had done so many signs before them, they still did not believe in him, 38 so that the word spoken by the prophet Isaiah might be fulfilled:

“Lord, who has believed what he heard from us,
    and to whom has the arm of the Lord been revealed?”

39 Therefore they could not believe. For again Isaiah said,

40 

“He has blinded their eyes
    and hardened their heart,
lest they see with their eyes,
    and understand with their heart, and turn,
    and I would heal them.”

41 Isaiah said these things because he saw his glory and spoke of him. 42 Nevertheless, many even of the authorities believed in him, but for fear of the Pharisees they did not confess it, so that they would not be put out of the synagogue; 43 for they loved the glory that comes from man more than the glory that comes from God.

44 And Jesus cried out and said, “Whoever believes in me, believes not in me but in him who sent me. 45 And whoever sees me sees him who sent me. 46 I have come into the world as light, so that whoever believes in me may not remain in darkness. 47 If anyone hears my words and does not keep them, I do not judge him; for I did not come to judge the world but to save the world. 48 The one who rejects me and does not receive my words has a judge; the word that I have spoken will judge him on the last day. 49 For I have not spoken on my own authority, but the Father who sent me has himself given me a commandment—what to say and what to speak. 50 And I know that his commandment is eternal life. What I say, therefore, I say as the Father has told me.”