The Word Faith people [Copeland, etc.] believe that Jesus Christ went to hell to be purified. What say You? And hell is not Paradise! You have to prove they are to make that statement. [I am assuming you are indicatinng that hell in the above Scripture is a literal hell, not the grave.]
If one takes literally the prophetic words of David as explained by the apostles, the the Scriptures show that Christ did in fact go to hell - the flaming part in which the rich man is tormented.
The question would seem to be, Why?
The answer is dominion. Christ ascended with the keys of life, death and hell.
Before the cross, Satan had the ability to kill and destroy; after the cross, only Christ has that authority.
Christ did not go to hell to be purified, there is no Scripture to support that view that I have found.
The "scapegoat" was pure; taking upon itself the sin punishment from the impure. The "scapegoat" did not take upon itself the sinful nature; nor did the taking of the punishment make the "scapegoat" impure; for then the sacrifice would have been in vain.
Further, there was no person able to make or take of them self any purity; the punishment for the impurity is met for those who place trust upon the "scapegoat;" for it is clear that without belief the impurity is not cleansed.
Hell cannot contain that which is pure, only the impure. Therefore, though descending into hell, hell had no power to hold for the "scapegoat" was pure. The authority over hell, and by the resurrection the authority over death, were then secured by Christ.
Christ paid for the sin, not that all mankind is sinless, but those that believe have the penalty for their sins met by the death of Christ.
This thread is an attempt to draw folks into considering that those in hell are dead or that death means a cessation of sentient existence. That cannot happen. Not until both those in hell and hell are cast into the lake of fire is there a "second death."
All, whose physical body ceases to function, continue sentient existence.
The OP would have one consider what in fact cannot happen.
Christ did not give up (just as no person on earth) sentient existence when He died on the Cross. Mortality of the body is not mortality of the sentient existence; the dead in Christ are raised to their reward; the dead without Christ are raise to their reward. Death then is not cessation, but the birth beginnings of a dwelling for continuing existence.