What is the significance of Jesus empty tomb?

In light of the faithful of the Old Testament, e.g. Adam, Abraham, Job, Judah, Rahab, King David.
These men and women didn’t know Jesus’ victory over death.
They were not baptized into Jesus’ death burial and resurrection, as the apostle Paul describes in Romans 6:2-10.

If indeed, God’s mercy and grace does extend to some, e.g. the faithful of the Old Testament, who didn’t have the knowledge of Jesus, why did Jesus even “waste our time”, by giving us the Great Commission, and telling us that ‘as we go to all people, we should teach, baptize and train them to obey God’s command to Love?” (I am asking a rhetorical question.)

The answer to this question is the “power” of the Holy Spirit.
When we fail to obey the Great Commission, then the “power” is not shared. When the power of the Holy Spirit, which can change people, cultures, communities, is not shared, people live powerless lives.
They still may hope, yet, they have no assurance of the thing, for which they blindly hope.
The incredible “Holy Spirit Power” resides in our ability to share a believer’s confident assurance of the hope that belongs to all who know Jesus Christ, because we have been buried in the grave of baptism, and we no longer fear anything that satan can throw at us.

Jesus name carries the confident assurance of the thing that all faithful people hope in our hearts.This includes faithful people like Melchizedek, David & Job.

They did not have the evidence of Jesus Christ’s empty tomb. We however do have evidence.

Therefore we have powerful evidence to share, with them in the world who are still on trial. These folks have a need for the evidence we have.

It is evidence which will show their innocence to the charges that are being presented to the Father, charges for which, our prosecutor and adversary, i.e. satan., is attempting to convict all mankind.

God bless, and share the exculpatory evidence.
DSM