Hi decon., This brings up another topic that also needs to be considered. .........Covenants....... Job was not in a covenant nor did Job HAVE an Advocate. Job was not "sealed" He looked forward to the Advocate promised but like Adam., was still under the judgment that needed a blood sacrifice.
Job got mercy but the grace (unmerited unearned favor of God) that we have today was not yet paid for by Jesus. People looked "forward to" it. This was already stated in one of the posts above about how the earth was handed over to the devil by the first man Adam...who was made in God's image and yet who failed to obey the 1 thing God told them not to do. Adam didn't have the Holy Spirit either.
I don't have all the answers about covenants but do know that we are in the new covenant so those who have Jesus have life. Those who do not have Jesus have not life but the wrath of God abides on them because they do not believe. Because they do not have the blood of Christ for the forgiveness of sins. God is able to save to the uttermost but there IS a condition and His name is Jesus., the answer for the sin problem. All people who do not have Jesus are under God's judicial and righteous wrath for sin. Thus the need for covenants until the time Jesus came to be the perfect Lamb of God.
We are not in the old covenant of law., we do not have to follow the law to be saved because the law is no longer our school master. We who are in the new covenant...post cross., We walk in the Spirit., No longer under the law of sin and death....we have been born again., made new creations....old things have passed away behold all things have become new.... we have the Holy Spirit living in us 24/7 who has promised never to leave us.
Job had no such sacrifice yet... Job was not born again... Job looked forward to the coming Advocate.. who is Jesus. The Holy Spirit came on these men and also left these men. They had to pray that God take not His Holy Spirit from them when they sinned. These are all considerations we have to look into to see where we are today in this new covenant of grace. God cannot overlook sin. He had to send the perfect sacrifice (His Son) to save His people from their sins. And until that time., He showed a lot of mercy and also grace but nothing like today under this new and living way that Jesus brought in... grace and truth.
As with the old Testament saints., the Holy Spirit did not stay with them 24/7. They had to meet the requirements of the covenants they were in that God made for them at the time they were here on earth. Before Christ., they died and were in Abraham's bosom awaiting Jesus to come get them out so they could go before God the Father...no more veil separating them from a Holy Righteous God.
Ask yourself "why all these covenants?" I'd suggest we all take an honest view of what IS really being said here... and also what is NOT being said. Presumption is not a good path for any of us Christians to be on. I don't have all the answers but I do know what I have in this new covenant that Jesus has brought in.