Some are blind spiritually, and cannot, or will not, see Jesus for Who He is. Others have a glimmering of faith. To the sheep belongs the faith to know that Jesus is the Shepherd and the sheep hear His voice, and know Him, and follow Him. Those of us who believe, frequently find it difficult to understand why others cannot believe. It has been a problem down the ages.
People hear the same message.
Some believe, some don t. Years after the incident by the pool of Bethzatha, Paul, speaking to the council in Athens, told them of the resurrection. When they heard Paul speak about the resurrection, some mocked , we read in the Book of Acts, but others said, We want to hear you speak about this again. It was another case of some believing, and some not. Someone once said, To those who believe, no explanation is necessary. To those who do not believe, no explanation is possible .