The intention of the OP subject is about those who consider the correct church one that only consults the New Testament, with hardly any reference to the Old Testament disregarding the two are one Book, one Word, and augment understanding of each other.
The OP has been changed to the original converts, who had absolutely no access to the New Testament, the writings were either in progress, or yet to come, and the New Testament had a long time coming to be compiled as we know it today.
Bottom line, I am recommending all who walk in the light of Jesus Christ to learn all about Him from the Old Testament and the new. It is fulfilling and completes the Holy Spirit believer.
The OP has been changed to the original converts, who had absolutely no access to the New Testament, the writings were either in progress, or yet to come, and the New Testament had a long time coming to be compiled as we know it today.
Bottom line, I am recommending all who walk in the light of Jesus Christ to learn all about Him from the Old Testament and the new. It is fulfilling and completes the Holy Spirit believer.
However, those details are seen and understood only in the light of the NT.