I'd attest that any action by God is extraordinary, since He, Himself, is extraordinary. That being said, it's only extraordinary to us since we are only mere mortals who cannot fully comprehend things that are of eternal nature. To God, it's just Him doing His will the way that He sees fit.
I agree to an extent that God doesn't have to rely on scripture. Only because all scripture came from Him, and so scripture itself is reliant upon Him. Which is why we can stand firm on what the scripture says. And throughout scripture, there is an overarching pattern that was first introduced in the Garden of Eden, all the way through to the closing benediction of Revelation. And that pattern is that God is redeeming mankind back to Himself.
This was the plan all along. God revealed this plan when He first introduced the gospel to Adam and Eve, after the fall. Instead of executing them on the spot for violating His command, which He would have had every right to do so, He instead revealed His plan of grace and redemption in the promise that "I will put enmity between you and the woman, and between your offspring and her offspring; He shall bruise your head, and you shall bruise His heal." Gen. 3:15.
Since there is, as the KJV puts it in James 1:17, no variation with God, then we can only assume that He meant what He said in Isiah 9:7 in the prophecy of the coming Messiah, Jesus Christ, that "Of the increase of His government and of peace there will be no end, on the throne of David and over His kingdom, to establish it and to uphold it with justice and righteousness from this time forth and forevermore. The zeal of the Lord of hosts will do this."
This kind of dialogue, in Isaiah 9:7, Genesis 3:15, and the references A, B, and C that I mentioned in my question, along with countless other passages of scripture all share a common theme of victory. Which is why I question where the whole ideology of a pre-trib rapture falls in line with the rest of scripture. Especially since the scripture is clear that God's kingdom, which He has appointed Jesus as King over with all authority, is "at hand", here on earth. And it's our calling through the great commission to advance His kingdom in Jesus's authority, not to walk in defeat waiting to be rescued out of here because the oppression is becoming too great.