It is not Protestant to be in communion with the Word of God.
“The
joint prayer of Lutherans and Catholics from Finland is a humble but faithful
sharing in the prayer of Jesus, who promised that
every prayer raised to the Father in his name would be heard.
This indeed is the royal door of ecuмenism:
such prayer leads us to look at the Kingdom of God and the unity of the Church in a fresh way; it reinforces our bonds of communion…”
Benedict XVI's Address to members of the Finnish Ecuмenical Delegation 18JAN000008 via L’ Osservatore Romano 30JAN30000008, p. 10 emph. DZP
“Dear
Brothers and Sisters in Christ! We are gathered, Orthodox Christians, Catholics
and Protestants – and together with us there are also some Jєωιѕн friends – to sing
together the evening praise of God… This is an hour of gratitude for the fact that we can pray
together in this way and, by turning to the Lord,
at the same time grow in unity among ourselves…
Our koinonia [
communion]
is above all communion with the Father and with his Son Jesus Christ in the Holy Spirit; it is communion with the triune God, made possible by the Lord through his incarnation and the outpouring of the Spirit. This communion with God creates in turn koinonia among people, as a participation in the faith of the Apostles…”
Benedict XVI's Ecuмenical Vespers Address 12SEP000006 via L’Osservatore Romano 20SEP000006 p. 10 emph DZ P
Not even the tip of the tip of the tip of the iceberg.