You seem to know your history quite well, Adam. As you yourself stated: the only church around in Augustine’s time was the Catholic Church.
Again, you’re one step closer to joining us at the Divine Wedding Feast!
I would have to disagree with you. The universal church chosen by grace is always around. The remnant church is the church within the church.
Romans 11
The Remnant of Israel
I ask, then, has God rejected his people? By no means! For I myself am an Israelite, a descendant of Abraham, a member of the tribe of Benjamin. God has not rejected his people whom he foreknew. Do you not know what the Scripture says of Elijah, how he appeals to God against Israel? “Lord, they have killed your prophets, they have demolished your altars, and I alone am left, and they seek my life.” But what is God’s reply to him? “I have kept for myself seven thousand men who have not bowed the knee to Baal.” So too at the present time there is a remnant, chosen by grace. But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace.
What then? Israel failed to obtain what it was seeking. The elect obtained it, but the rest were hardened, as it is written,
“God gave them a spirit of stupor,
eyes that would not see
and ears that would not hear,
down to this very day.”
And David says,
“Let their table become a snare and a trap,
a stumbling block and a retribution for them;
let their eyes be darkened so that they cannot see,
and bend their backs forever.”
Sacred Scripture
The Parable of the Weeds
He put another parable before them, saying, “The kingdom of heaven may be compared to a man who sowed good seed in his field, but while his men were sleeping, his enemy came and sowed weeds among the wheat and went away. So when the plants came up and bore grain, then the weeds appeared also. And the servants of the master of the house came and said to him, ‘Master, did you not sow good seed in your field? How then does it have weeds?’ He said to them, ‘An enemy has done this.’ So the servants said to him, ‘Then do you want us to go and gather them?’ But he said, ‘No, lest in gathering the weeds you root up the wheat along with them. Let both grow together until the harvest, and at harvest time I will tell the reapers, Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.’”