The Nicodemus story can be read as a distillation of the Gospel of John and an example of many of its key features. John 3:1–21 poses a wide range of the problems raised by this most distinctive and mysterious of the four gospels. It shows characteristic practices of John as a reader, writer and teacher. In line with John's theology of the Spirit ‘leading into all the truth’, it also shows him as a daring theologian, opening up fresh interpretations and ways of doing theology beyond the Septuagint and the Synoptic Gospels and even beyond his own Prologue (itself a remarkably daring piece of theology). That same Spirit means that John also expects his readers to be led into further truth, and to improvise on his theology as he himself did on the Septuagint and on the Synoptic traditions. His ways of reading, writing and teaching encourage such a response in the Spirit by creating a work rich in intertextuality, imagery and conceptuality which has a ‘deep plain sense’, superabundant in meaning and always inviting the reader to reread, learn more and interpret afresh. So one challenge for readers now is whether they are open not only to thinking along with John but also to thinking beyond him, in ways appropriate to different people and contexts. But this transformation in thought and imagination is not all: it is inseparable from doing the truth ‘in God’. The mutual involvement of seeing, believing/trusting, knowing and living in love is above all communicated in the drama of John's Gospel, whose backbone is a series of meetings with Jesus and the injunction to follow Jesus. More embracing and fundamental than, for example, doctrinal theology or existential decision-making, is the dramatic reality of encountering other people and following Jesus in all the complexities of life in specific contexts. In John 3:1–21 the encounter of Jesus with Nicodemus is the dramatic heart of the passage, blending into a discourse which itself culminates in the ultimate drama of ‘deeds done in God’. But to stop interpretation there would be to refuse the Johannine invitation to enter into more truth with a view to ‘doing greater things’. So the article ends with two midrashic interpretations of Nicodemus for today.