From the early Church Fathers to now.
3 Patristic · 1 Medieval
“And command them to take out of the midst of the Jordan, where the feet of the priests stood, twelve very hard stones, which you shall set in the place of the camp, where you shall pitch your tents this night.”
“The people of the Hebrews, as we learn, after many sufferings, and after accomplishing their weary course in the desert, did not enter the land of promise until it had first been brought, with Joshua for its guide and the pilot of its life, to the passage of the Jordan. But it is clear that Joshua also, who set up the twelve stones in the stream, was anticipating the coming of the twelve disciples, the ministers of baptism.”
“Also, twelve stones from Jordan's bed, Left dry when waters backward flowed, He raised and firmly set in place, The type of Christ's apostles twelve.”
“The twelve patriarchs destined to become twelve tribes were arranged to be a type and pattern of the number of the apostles. So were the twelve fountains in the desert and twelve stones taken from the bed of the Jordan. We leave it to the student of the law to find deeper proof of all this.”
“Because the Holy Spirit brought together these articles of faith, contained in the depths of the Scriptures, into one through the twelve Apostles as through the most steadfast witnesses: hence it is that the aforesaid articles were collected into the one Creed of the Apostles. And therefore, according to the Apostles who composed it, they can be called twelve articles, because each Apostle, for the building up of the faith, set down one article as one living stone: which the Holy Spirit rightly prefigured in the twelve men who drew twelve stones from the bed of the Jordan for the construction of the altar of the Lord.”
The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.