We have the choice every day to believe people by taking them at their word.  Some people are credible, and others are not.  I asked my four-year-old the other day if he brushed his teeth after he got up in the morning.  He answered yes.  Not believing him, I said, “let me check to see if your toothbrush is wet.”  He looked at me and then put his head down.  One of the best ways to tell if your son is lying is if he puts his head down.  It worked the same way for my older son.
Do people lie to us because they benefit something from the situation?  Sure, all of the time.  Who do we believe?  Is the person credible at all?  It is easier for us to believe someone who we trust.  Someone who hasn't lied to us in the past.  A person that doesn't gain anything by having us believe them.

Do we believe in Jesus?

As Christians, we read the Bible.  We hear many great stories of Jesus and his work here on earth.  Since Jesus died over two thousand years ago, we cannot physically see him in the flesh.  As Christians, we call ourselves believers.  We took the leap of faith and put our belief in someone that we cannot physically see on earth.  Someone who we cannot see performs miracles first hand.  We are called to take Jesus at his word and believe he is the son of God.

What does the Bible say about believing in the Son of God?

1 Peter 1:8 “Though you have not seen him, you love him. Though you do not now see him, you believe in him and rejoice with joy that is inexpressible and filled with glory,

John 20:29 “Jesus said to him, “Have you believed because you have seen me? Blessed are those who have not seen and yet have believed.”

2 Corinthians 5:7 “for we walk by faith, not by sight.”

Our relationship with Jesus is a leap of faith.  Unlike the disciples, we do not physically see Jesus.  We put our faith in Jesus because we believe that he is the son of God.  The deepness of our relationship with Jesus confirms our strength as believers.  Not only do we believe that Jesus is the son of God, but we believe that he died and rose again.  Only a God could die and rise again.  No man has ever conquered death without God.