"An evil and adulterous generation seeks for a sign, but no sign will be given to it except the sign of Jonah.”" -- Matthew 16:4
The world is full of skeptics who will never really believe. I remember hearing Apologist Josh McDowell tell of an encounter with a college student after one of his lectures. After a lengthy defense of the faith, the student still had questions. McDowell finally asked, "If I were to answer every one your questions about the claims of Christ, would you be willing to believe?" The young man said without hesitancy, "No, it would demand to great a change in my lifestyle". "An evil and adulterous generation seeks for a sign".
The Pharisees and Sadducees were always looking for a sign from heaven. Hundreds of years have passed and people are still looking for such signs. While the greatest sign known to man has been shown in the resurrection of Jesus, they still look and doubt. Abraham said in Luke 16:31, “If they do not listen to Moses and the Prophets, they will not be convinced even if someone rises from the dead.” "An evil and adulterous generation seeks for a sign".
The truth is; people just don't want to believe. Are you someone who has a legion of questions that keep you from Christ? If all your questions are answered are you willing to believe? Don't look for any other sign than the sign of Jonah. The evidence is clear, "...Christ died for our sins according to the Scriptures, that he was buried, that he was raised on the third day according to the Scriptures" (1 Corinthians 15:3-4) Stop seeking for some other sign. Seek the Lord and you will be surprised with joy, for he said in Jeremiah 29:13-14, "You will seek me and find me when you seek me with all your heart. I will be found by you”