Concerning Righteousness with God and Eternity: Hebrew v. Greek Scriptures…
From Adam forward, mankind has found righteousness (a right standing) with God through their “faith” in God; that is, believing that He is true and that God is Sovereign and will do exactly as He has promised. From Adam to Enoch to Noah to Abraham to Moses to Jesus to the Revelation…nothing has changed concerning covenant relationship with the Father; that is, covenant relationship has always been established by “faith”…see Hebrews, Chapter 11.
The most relevant difference between the Hebrew Scriptures and “faith” and the Greek Scriptures – Jesus – and “faith” is the destiny of the soul of man upon death of the body in Time. In the Hebrew Scriptures, prior to the blood atonement provided by Jesus at Golgotha, anyone who died having faith in God was immediately translated to the region the Holy Spirit refers to as Sheol (Hades in the Greek) and these righteous dead, their soul – fully conscious and cognitively aware, remained in Sheol (Abraham’s Bosom – Paradise, Luke 16), awaiting the only acceptable atonement for their sin, Jesus Christ our Messiah.
Messiah’s blood atonement was essential as nothing impure is permitted to enter the Kingdom of God (Rev. 21:27). Though they had established covenant relationship with the Father by faith, their sin had not received the only acceptable sacrifice for atonement as Messiah’s first-advent had not manifest yet God is faithful and preserved their soul for that Day of Atonement – the Cross.
The Holy Spirit tells us that while the body of Jesus laid in the Tomb subsequent His crucifixion, Jesus in Spirit, entered the region of Sheol/Hades-Paradise and preached liberty to the captives there through the Gospel that was ordained as God’s battle strategy “before Time began” (2 Timothy 1:8-10; Ephesians 4:8-10). Jesus then escorted these Old Testament saints into the Kingdom; therefore, Sheol/Hades-Abraham’s bosom is currently EMPTY.
Subsequent Messiah’s blood atonement at Golgotha for our sin, when the faithful in Jesus die in body, they are immediately translated into the presence of our Lord as Jesus paved the path for our salvation and eternal life through the forgiveness of sin seeing that nothing impure is permitted to enter the Kingdom of God (Rev 21: 27; 2 Corinthians 5:8). It is by faith in Jesus, alone, that we enter into covenant relationship with the Father and it is by the shed blood of Jesus as atonement for our sin that we experience eternal life in the Kingdom subsequent to the death of our body in Time.