A quick update here. Grudem responded to Piper’s rebuttal of Grudem’s change of his position on baptism and church membership. (That sentence is a mouthful!)
Then Justin Taylor followed that up by highlighting two helpful articles by Vern Poythress. The first one is called “Indifferentism and Rigorism in the Church: With Implications for Baptizing Small Children“, and explores two attitudes to church membership and the nature of faith in little children (ages 2 and up). What Poythress says concerning the church in that paper is worth thinking through irrespective of the baptism position altogether — especially for us fundamentalist types.
The second paper is more overtly connected to paedobaptism (Vern Poythress is paedo), and is entitled “Linking Small Children with Infants in the Theology of Baptizing“. It explores the implications of Jesus’ reception of the little children and the nature of our experiencing Jesus in the company of the saints every time we gather in corporate worship.
Both of the articles by Poythress are well worth your time. He is very humble and brings up some excellent points. What he says can also be taken to heart even without opening membership to those of the opposite baptismal position. I’d be interested to hear any of your thoughts on the articles!