“If I could just see a sign, I would believe Jesus was the Son of God.” Statements like this have plagued the world since Jesus walked upon it. Are these statements true? The answer is, “Not necessarily.” The New Testament has examples of both results—people who saw a sign and believed as well as people who saw and refused to believe.
So when He came to Galilee, the Galileans received Him, having seen all the things that He did in Jerusalem at the feast; for they themselves also went to the feast. -John 4:45
The signs Jesus performed in Jerusalem prompted the Galileans to welcome Him. As a nobleman came seeking healing for his dying son, Jesus meets the people with a scathing remark.
Unless you people see signs and wonders, you simply will not believe.
-John 4:48
After the man presses the issue, Jesus tells him, “Go your son lives” (John 4:50). Arriving home, the man discovers that his son was healed the same moment that Jesus had told him to go home. This sign produced belief.
and he himself believed and his whole household. -John 4:53b
Unfortunately belief is not always the result of a miraculous sign. In John 5, Jesus heals the man at the Pool of Bethesda who had been sick for 38 years. After this man gets in trouble with the Jews for carrying his mat on the Sabbath, he encounters Jesus in the temple. Jesus has some very pointed words for him as well.
Behold, you have become well; do not sin anymore, so that nothing worse happens to you. -John 5:14
Jesus had given the man the physical healing he desired. However, spiritually the man’s heart was sick. This healing did not produce faith. Judging by the outcome, this healing did not even produce gratitude.
The man went away, and told the Jews that it was Jesus who had made him well. -John 5:15
For those who did not want to believe, signs and wonders simply did not help. In His parable about the rich man and Lazarus in Luke 16:19-31, Jesus warned that no matter how grandiose the sign some will not believe. This warning was proven correct upon Jesus’ resurrection.
Although according to 1 Corinthians 13:8-13, the age of miraculous signs has come to an end, the desire for signs as evidence still exists today. Even if they were still available though people have not changed. If they do not want to believe, they simply will not do so “even if someone rises from the dead” (Luke 16:31).