... Many of our ancestors have have had the opportunity to repent and accept the ordinances done for them by proxy.
That is not true.
2 Corinthians 6
2(For he saith, I have heard thee in a time accepted, and in the day of salvation have I succoured thee: behold, now
is the accepted time; behold, now
is the day of salvation.)
Hebrews 9
27 And as it is appointed unto men once to die, but after this the judgment:
28 So Christ was once offered to bear the sins of many; and
unto them that look for him
shall he appear the second time without sin unto salvation.
God gave this promise:
(New Testament | John 14:23)
23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.
They which are called might receive the promise of eternal inheritance.
Acts 13
48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed.
Ephesians 1
3 Blessed
be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly
places in Christ,
4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love,
5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will,
6 to the praise of the glory of His grace, by which He made us accepted in the Beloved.
7 In Him we have redemption through His blood, the forgiveness of sins, according to the riches of His grace
8 which He made to abound toward us in all wisdom and prudence,
9 having made known to us the mystery of His will, according to His good pleasure which He purposed in Himself,
10 that in the dispensation of the fullness of the times He might gather together in one all things in Christ, both which are in heaven and which are on earth—in Him.
11 In Him also we have obtained an inheritance, being predestined according to the purpose of Him who works all things according to the counsel of His will,
12 that we who first trusted in Christ should be to the praise of His glory.
Titus 3
5 Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;
6 Which he shed on us abundantly through Jesus Christ our Saviour;
7 That being justified by his grace, we should be made heirs according to the hope of eternal life.