WSC Q.37: What benefits do believers receive from Christ at death?
The souls of believers are at their death made perfect in holiness, (Heb. 12:23) and do immediately pass into glory; (2 Cor. 5:1,6,8, Phil. 1:23, Luke 23:43) and their bodies, being still united to Christ, (1 Thess. 4:14) do rest in their graves, (Isa. 57:2) till the resurrection. (Job 19:26–27)
WLC Q.86: What is the communion in glory with Christ, which the members of the invisible church enjoy immediately after death?
The communion in glory with Christ, which the members of the invisible church enjoy immediately after death is, in that their souls are then made perfect in holiness, (Heb. 12:23) and received into the highest heavens, (2 Cor. 5:1,6,8, Phil. 1:23, Acts 3:21, Eph. 4:10) where they behold the face of God in light and glory, (1 John 3:2, 1 Cor. 13:12) waiting for the full redemption of their bodies, (Rom. 8:23, Ps. 16:9) which even in death continue united to Christ, (1 Thess. 4:14) and rest in their graves as in their beds, (Isa. 57:2) till at the last day they be again united to their souls. (Job 19:26–27) Whereas the souls of the wicked are at their death cast into hell, where they remain in torments and utter darkness, and their bodies kept in their graves, as in their prisons, till the resurrection and judgment of the great day. (Luke 16:23–24, Acts 1:25, Jude 6–7)
WCF 32.1.
The bodies of men, after death, return to dust, and see corruption: (Gen. 3:19, Acts 13:36) but their souls, which neither die nor sleep, having an immortal subsistence, immediately return to God who gave them: (Luke 23:43, Eccl. 12:7) the souls of the righteous, being then made perfect in holiness, are received into the highest heavens, where they behold the face of God, in light and glory, waiting for the full redemption of their bodies. (Heb. 12:23, 2 Cor. 5:1,6,8, Phil. 1:23, Acts 3:21, Eph. 4:10) And the souls of the wicked are cast into hell, where they remain in torments and utter darkness, reserved to the judgment of the great day. (Luke 16:23–24, Acts 1:25, Jude 6–7, 1 Pet. 3:19) Beside these two places, for souls separated from their bodies, the Scripture acknowledgeth none.