While Paradise is not now a part of Sheol/Hades it will be mentioned here because it was located in Sheol/Hades at one time. Before the death, burial, and resurrection of Jesus Christ everybody who died went to Sheol/Hades, which was at that time divided into at least two compartments. One was a place of torment while the other was a place of blessing, which was referred to as Abraham's Bosom (Lk. 16:22-25). As we mentioned before, Tartarus may be a specific place in Sheol/Hades.
We know that Jesus Christ went "into the lower parts of the earth" (Eph. 4:9), that is to Sheol/Hades, "in the heart of the earth," for three days and nights while his body was in the grave (Mat. 12:40). The Lord Jesus told the repentant thief that he would join Him in Paradise that same day (Lk. 23:42,43). This tells us that Paradise was located in Sheol/Hades at that time. We believe that this was the same place referred to as Abraham's Bosom in Luke 16. However, after Jesus Christ rose from the dead He ascended to the Father, taking the saints who were in Abraham's Bosom to heaven with Him. Thus, He took "captivity captive" (see Eph. 4:8-10).
That Paradise was moved to heaven is confirmed to us by the Apostle Paul who speaks of a man who was "caught up into Paradise" where he "heard unspeakable words" (II Cor. 12:3,4). With Jesus Christ's work complete, the believers who had been confined to Sheol/Hades were now taken to Heaven to wait in God's presence until the time of their resurrection to enter His Kingdom on Earth. Since that time, at death all believers go to Paradise in Heaven to await the time of their resurrection. This is true whether they belong to the Kingdom Church of the future or the Body of Christ Church of the present Dispensation of Grace.
“If sinners be damned, at least let them leap to Hell over our dead bodies. And if they perish, let them perish with our arms wrapped about their knees, imploring them to stay. If Hell must be filled, let it be filled in the teeth of our exertions, and let not one go unwarned and unprayed for.” - Spurgeon