Claim. At the Second Advent, all NT-age life-spirits in Paradise will descend to earthly believers, helping them attend the returning Christ and reach divine-spirit level. The descending spirits will thereby be elevated from life-spirit to divine-spirit alongside the earthly saints, and all will enter the otherwise-empty Kingdom of Heaven together. Earthly people assist in the resurrection of the spirits.
Elaboration. Per 2.3.2. The Returning Resurrection of the Spirits of Israelites and Christians: NT-age life-spirits in Paradise “will all return to the earth to help faithful people believe in and attend the returning Christ. By thus helping people on earth to attain the level of divine spirit, they too will receive the same benefit and become divine spirits.” When the earthly saints later enter the Kingdom of Heaven in heaven, the returning spirits enter with them.
The distinctive feature: bidirectional dependency. “The spirits not only help earthly people; earthly people also assist in the resurrection of the spirits.”
DP grounds this in Hebrews 11:39-40 — OT saints “did not receive what was promised, since God had foreseen something better for us, that apart from us they should not be made perfect” (spirits cannot perfect without earthly cooperation) — and 19 — “unless the believers on earth first loose what is bound, the spirits also cannot loose what is bound in them. Since spirits can be resurrected only by cooperating with believers on earth, Jesus gave the keys of the Kingdom of Heaven to Peter.”
Ecclesiology implication: earthly believers carry providential weight for the dead. Structurally adjacent to Catholic prayers for the dead and Mormon vicarious baptism — DP shares the form without the mechanism.
See also. dp-growth-stage-returning-resurrection-of-old-testament-spirits, dp-spirit-grows-only-in-the-flesh-on-earth