“The Faith of Millions” is a rather antiquated apologetic or popular catechetical book. It is not an authoritative teaching document. You won’t find language like that in the decrees of Trent, or in the catechism of that Council, or in the 1983 catechism, or in Vatican II, etc.
Are you saying an ordained Roman Catholic priest is incorrect?
And if so, by what do you determine that by?