It accomplished Salvation from unbelief/disobedience !
One of the consequences of the sin of Adam, who by the way did not federally represent all mankind without exception, but only the godly remnant or seed Mal 2:15
And did not he make one? Yet had he the residue of the spirit. And wherefore one? That he might seek a godly seed. Therefore take heed to your spirit, and let none deal treacherously against the wife of his youth.
Again one of the consequences was that God confined, imprisoned that Seed into Unbelief or disobedience Rom 11:32
32 For God hath concluded them all in unbelief, that he might have mercy upon all.
By it God designed a purpose of mercy for them, they all being the vessels of mercy Rom 9:23-24
23 And that he might make known the riches of his glory on the vessels of mercy, which he had afore prepared unto glory,
24 Even us, whom he hath called, not of the Jews only, but also of the Gentiles?
Adam was the natural and federal head of all the vessels of mercy, whether they be of the jews or of the Gentiiles !
But here is the point, back in Rom 11:32 it is stated that God concluded them all [ all the vessels of mercy] unto unbelief !
That word concluded is key here, its the greek word sygkleiō and means:
I.
to shut up together, enclose
A.
of a shoal of fishes in a net
II.
to shut up on all sides, shut up completely
It means to: to shut or hem in; close in on all sides, to hold or contain,
to confine in or as if in a prison.
In fact some modern translations render the word thusly:
For God hath shut up all unto disobedience, that he might have mercy upon all.asv
32 God has locked up all people in disobedience, in order to have mercy on all of them.ceb
32 For God has consigned all to disobedience, that he may have mercy on all.esv
32 God has ·given [imprisoned] all people ·over to their stubborn ways [L to/in disobedience] so that he can show mercy to all.exb
32 For God has imprisoned all in disobedience, so that He may have mercy on all.hcsb
Also it denotes :
make subject to, so to deliver one up to the power of a person or thing that he is completely shut in, as it were, without means of escape:
They were consigned to the power of the devil, and thats how unbelief reigns 2 Cor 4:3-4
3 But if our gospel be hid, it is hid to them that are lost:
4 In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
Listen, as long as satan has power over our minds, blinding them, we are still imprisoned in Unbelief/ disobedience and CANNOT BELIEVE !
But here is the deal, all for whom Christ died, as their Covenant Head and Surety, whether jew or Gentile, He being given as a Covenant to the people as per Isa 42:6,7
6 I the Lord have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles;
Gentiles included in the people, one of the effects of that follows in Vs 7
To open the blind eyes, to bring out the prisoners from the prison, and them that sit in darkness out of the prison house.
It brings all the people for whom He was given as a Covenant for, It brings them out of the Prison ! What Prison ? The Prison of Unbelief/ disobedience, which the devil, with power granted him by God, held them imprisoned unto. Thats why belief of the Gospel is an evidence of satan's power over one has been destroyed by the victorious death of Christ ! The effects , results, consequences of His death for one is:
7 To open the blind eyes, to bring out the prisoners from the prison of unbelief/disobedience, and them that sit in darkness out of the prison house.