Nicodemus is also called Saint Nicodemus. He was a Pharisee and a senator in the Jewish ruling council, the Sanhedrin. He appears three times in the Gospel of John. He visited Jesus by night to ask questions (John 3:1–2), he challenged condemning Jesus without a hearing (John 7:50-51) and assisted Joseph of Arimathea preparing Jesus for burial (John 19:38-39). He is possibly the Nicodemus ben Gurion in the Talmud, a wealthy and popular Jewish leader famous for miraculous powers. Jesus explained to him the mystery of regeneration as was taught in the prophets. Nicodemus was not offended at Jesus’ correction but received it in humility. He defended Jesus openly against the Pharisees, assisted at his burial and was later kicked out of the synagogue for believing in Christ. He retired to his country home where he died.
The night time meeting between Jesus and Nicodemus was symbolic in two ways. First of all Nick was representing others who were not immediately present because he said “we know” (John 3:2) and so Jesus answered him in the plural speaking “unto thee” (you plural) and “ye” (you plural). Jesus was speaking to all those others for whom Nicodemus had spoken, other religious leaders, and perhaps also other believers and perhaps too all of us. Secondly, Nicodemus came at night, symbolic of the darkness that we all faced until light came into the world and we came into that light (verses 19-21). In the Old Testament the law was that light, now it is Christ. Even the most devout and moral people who may obey all the commandments can still be in darkness, because the true light is Jesus.