God does deal with differing groups differently but when it comes to salvation it is always the same.
Ro 4:1 What shall we say then that Abraham our father, as pertaining to the flesh, hath found?
Ro 4:2 For if Abraham were justified by works, he hath whereof to glory; but not before God.
Ro 4:3 For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
Ro 4:4 Now to him that worketh is the reward not reckoned of grace, but of debt.
Ro 4:5 But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.
Ro 4:6 Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works,
Ro 4:7 Saying, Blessed are they whose iniquities are forgiven, and whose sins are covered.
Ro 4:8 Blessed is the man to whom the Lord will not impute sin.
Ro 4:9 Cometh this blessedness then upon the circumcision only, or upon the uncircumcision also? for we say that faith was reckoned to Abraham for righteousness.
Ro 4:10 How was it then reckoned? when he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision.
Ro 4:11 And he received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:
Ro 4:12 And the father of circumcision to them who are not of the circumcision only, but who also walk in the steps of that faith of our father Abraham, which he had being yet uncircumcised.
Ro 4:13 For the promise, that he should be the heir of the world, was not to Abraham, or to his seed, through the law, but through the righteousness of faith.
Ro 4:14 For if they which are of the law be heirs, faith is made void, and the promise made of none effect:
Ro 4:15 Because the law worketh wrath: for where no law is, there is no transgression.
Ro 4:16 Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,
From Adam to the present all are saved by Grace through Faith. To say that those of the Old Testament or of the tribulation are saved by their death or by their works is missing the mark. Those past were saved by faith looking ahead, we are saved by faith looking back.
I fear you are serving a continually dieing Christ, in other words Christ's death on the cross was not a one time offering but must be continually offered for sin. Christ died one time for the sin of the world, past, present and future. If this is not the case we have no hope because Christ died 2000 years past.
Heb 10:10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Heb 10:11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Heb 10:12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
Heb 10:13 From henceforth expecting till his enemies be made his footstool.
It is a sure thing that we will be judged, but not to determine our salvation but reward or loss.
Ro 14:11 For it is written, As I live, saith the Lord, every knee shall bow to me, and every tongue shall confess to God.
Ro 14:12 So then every one of us shall give account of himself to God.
2co 5:10 For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.