Romans 9:22-24 — What if God, willing to shew His wrath, and to make His power known, endured with much longsuffering the vessels of wrath fitted to destruction:
And that He might make known the riches of His glory on the vessels of mercy, which He had afore prepared unto glory,
Even us, whom He hath called, not of the Jews only, but also of the Gentiles?
Willing to show His wrath — Having the will, sovereignty
Make His power known — showing His character and authority
Fitted (middle voice) — God isn't doing the fitting. The action is done by the persons themselves.
Destruction — not of being but of well-being, not annihilation but ruin as to carrying outits purpose.
Riches of His glory = God's grace to believers
Mercy — pity in action. God's salvation is provided for all but only those who receive it obtain mercy.
Prepared — by Christ on earth for heavenly glory
Verse 24 shows Paul is speaking of Jews and Gentiles here, not specifically of individuals
If a man goes to hell it is because he fitted himself or it. If he goes to heaven, it is because God fitted him for it.