Roman Catholics sometimes compare their church to Noah's ark. But If the RCC were truly a model of the Ark; then not one single Catholic would ever be in the slightest danger of hell and eternal suffering because nobody aboard the Ark perished in the Flood.
And not only that, but were their church a true model of the Ark, then nobody would be able to apostatize. The reason being that after all were aboard, God sealed the hatch.
● Gen 7:16 . .Those that entered were male and female, and of all species they came, as God had commanded Noah. Then Yhvh shut him in.
The Hebrew word for "shut" actually means to shut up; like as when a corral gate is closed to pen livestock; plus the Ark's door was calked with bitumen to prevent leakage. In other words, the Ark's door could be opened only from the outside.
(Some posit that Noah could have climbed out the Ark's window; but it wasn't even large enough for Noah to see much of anything. The only way he knew the water had receded was to dispatch winged scouts to check out the neighborhood for him.)
According to the record; the one door of the Ark was located in its hull. So then, safety aboard the Ark hinged upon the integrity of that one door.
Ring a bell?
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John 10:7-10 . . I assure you, I am the gate for the sheep. Yes, I am the gate. Those who come in through me will be saved.
NOTE: One of the meanings of the Greek word for "saved" is to protect. In other words: Christ's sheepfold is the place of safety from a big bad wolf called the wrath of God.
The gate controlling access and egress to Christ's sheepfold isn't a mechanical structure; no, it's Christ himself. Well; I should think the Lord's sheep would have no more luck getting past him then Noah would've had getting past the Ark's door.
And anyway; if even one sheep were allowed to escape; it would reflect very poorly on Christ's competence as a shepherd. Well; in my estimation, shepherds that let their sheep escape are careless: they're not good shepherds at all; they're just average shepherds; viz: no better than most.
I think most Christians would agree (at least in theory anyway) that Christ is a competent shepherd, and that he, as the sheepfold's gate, is secure enough. But apparently some are actually of the opinion that outside the sheepfold, the sheep's safety cannot be guaranteed.
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John 10:3-4 . .He calls his own sheep by name and leads them out. After he has gathered his own flock, he walks ahead of them, and they follow him because they recognize his voice.
It's at this point that the sheep are most vulnerable because now they're out in the open where they can wander off and get lost or be grabbed by a predator while their master's back is turned. Well; that's never going to happen because according to
John 6:37-39, it is God's will that His son lose nothing of what He has given him. And according to
John 8:29, Jesus never fails to comply with his Father's wishes.
● Ps 23:4 . . Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me.
Bottom line: Noah's ark is a figure of the good shepherd rather than the RCC because it can guarantee no one, not even its own Popes, 100% fail-safe protection from lake of brimstone depicted at Rev 20:11-15.