John Piper’s website has many places where he reveals a charismatic or as some call it continuationist perspective. Earlier in the week he argued that even in the New Testament the gifts of the Spirit were non-authoritative and inferior to the Apostles teaching:
The apostles viewed their teaching as from God in an authoritative, inerrant way. All of the spiritual gifts are from God in a non-authoritative, non-inerrant way, and therefore always subordinate to the inspired word of God. READ MORE
If you are interested in more from Piper on this, he also posted a while back a sermon on signs and wonders in the 1990s and fascinatingly back in the 1980s took a “charismatic quotient” of his church.