You really can’t use the Apostles’ Creed to prove the Catholic understanding of Communion of the Saints to a Protestant, because Protestants have a different understanding of the doctrine of Communion of the Saints and they would say that Catholics have twisted the Apostles’ Creed.
Here is Question 55 from the Heidelberg Catechism (a catechism that is used in Calvinistic churches
Question 55. What do you understand by “the communion of saints”?
Answer. First, that all and every one, who believes, being members of Christ, are in common, * partakers of him, and of all his riches and gifts; secondly, that every one must know it to be his duty, readily and [j] cheerfully to employ his gifts, for the advantage and salvation of other members.
My husband and I grew up evangelical Protestant. We knew about the Apostles Creed, and in my church we read it every few years.
To us, the doctrine of Communion of the Saints had nothing to do with asking the saints to pray for us. We would have considered that a sin, as the Bible teaches that we are not to attempt to communicate with the dead.
To us, as evangelical Protestants, the doctrine of Communion of the Saints referred to the unity of all Christians. Even if we had disagreements with Lutherans, Catholics, Methodists, Episcopals, Pentecostals, non-denominational Christians, the Orthodox, etc.–we believed that we were all One in Christ.
We based this doctrine on the Bible.mainly passages like I Corinthians 12 (especially vs. 13), and Ephesians 4 (especially vs. 4).
And as you can see, this interpretation of “Communion of the Saints” is what the ancient Protestant catechisms teach
There was no real practical conclusion regarding this doctrine, other than to make sure that we were always charitable towards those who were believers in Jesus, but attended a different church than us, and to make sure that we used our spiritual gifts to build up the Body of Christ.
I would say that this is still the basic understanding of the doctrine of Communion of the Saints in evangelical Protestant churches–being One in Christ. It has nothing to do with asking those who are in heaven to pray for us.
So forget about using the Apostles Creed to prove anything.
If you DO use the Apostles’ Creed, you’re going to have to find evidence regarding exactly what the Apostles meant when they referred to Communion of the Saints. You’re going to have to prove that they believed we could ask those in heaven to pray for us.
That being said, I will tell you that my very Protestant parents-in-law never believed in asking the saints for intercession–UNTIL their grandson was diagnosed with cancer at age 2. That’s when they learned that Catholics pray and ask everyone else, including those in heaven, to pray for them. And my parents-in-law began believing in calling upon the saints to pray when they saw that the little boy was getting better. My parents-in-law actually made a trip to The Shrine of Our Lady of the Snows to ask the priests and the saints to pray for their grandson. Today he’s fine, although he still has 3 years to go to be pronounced permanently cured. Cancer is mean.
I agree with the Bible passages posted in earlier posts–these are good to show to Protestants, especially Hebrews 12:1–that one is hard to get around!*