The quotation you cite comes, I believe, from one of Swedenborg’s letters to Beyer. My understanding is that neither Swedenborg’s letters nor the work published as Spiritual Experiences are authoritative Divine revelation.

For details, see “Which of Swedenborg’s books are Divine revelation?” at

http://swedenborgdigitallibrary.org/contets/books.html

It would be more correct to definitely specify that the “Biblical epistles”, “useful for the church” exclude the writings of Paul. In common idea, the Biblical epistles include those of Paul, and therefore it would be prudent to let people know that they are not meant.

Swedenborg differentiates between the writings of the Apostles and those of Paul.

It is written that: “* With reference to the writings of the Apostles and Paul I have not included these in ARCANA COELESTIA, and this for the reason that they are doctrinal writings, and so are not written in the style of the Word as are the Prophets, David, the Gospels, and the Revelation. The style of the Word wholly consists of correspondences, on which account it effects an immediate communication with heaven. In the doctrinal writings, however, there is another style which indeed communicates with heaven, but mediately. That they were so written by the Apostles was in order that the new Christian Church might commence through these, on which account doctrinal matters could not be written in the very style of the Word, but in a manner that might be more clearly and more directly understood. Nonetheless, the writings of the Apostles are good books for the Church, maintaining the doctrine of charity and its faith as strongly as ever did the Lord Himself in the Gospels and in the Revelation, as can be clearly seen and observed if one attends to the matter while reading those writings.”

First it was said “”With reference to the writings of the Apostles and Paul” and later it was stated that
“…the writings of the Apostles are good books for the Church”

See, also the passages from Spiritual Experiences concerning the nature of the writings of Paul, and why they were permitted to be included in the Bible.

o They who are in the affection of truth for the sake of truth, when they arrive at adult age, and can see from their own understanding, do not simply abide in the doctrinals of their own church, but examine from the Word whether they are truths (n. 5402.2, 5432.5, 6047.3).

I look forward to seeing that reference number in Conjugial Love, which I wasn’t aware of.