The Protestant movement recalled the 16th century Church to the primacy of the Word—written, read, preached, inwardly digested. The 18th century Holiness movement reminded the Church of God’s love for the poor. The Anglo-Catholic movement re-grounded the Church in the sacramental life of worship. All three strands are grounded in the Gospel. Each one extrapolates the Gospel in a specific direction. No strand is dispensable. Other Christian bodies have often taken one strand to an extreme. By God’s grace the Anglican tradition has held the streams in creative tension. This miracle of unity is a treasure worth keeping.
From the Anglican Church in North America website. Rather than the sometimes-given definition of “three streams” being Evangelical, Charismatic, and Sacramental; Three streams in Anglicanism is Reformed, Wesleyan/Holiness, and Catholic.