Enoch-Noah-Abraham-Moses-Elijah were righteous before God by faith; so then, who needs Jesus?
Enoch – Noah – Abraham – Moses – Elijah were in covenant relationship with God through their faith (Hebrews 11) NOT by works of self-righteousness, but at death of their body in Time they could not enter the Kingdom of God because their sin had not received the mandated blood atonement and imputed righteousness for the cleansing of sin first pictured in Genesis 3:21 and clearly articulated in Leviticus 17:11 as “nothing impure” is permitted to enter the Kingdom of God (Revelation 21:27).
The Old Testament saints, upon death of their body in Time, were relegated to a region known as Sheol, the place of the dead, and more specifically, Sheol-Abraham’s Bosom or “Paradise” and these OT saints awaited the blood atonement of Messiah Jesus (Luke 16). As Jesus’ body laid in the tomb for three-days, Messiah in Spirit, entered Sheol-Paradise and preached liberty, the Gospel, to those OT saints awaiting Him and ultimately Messiah took them on-high and accompanied them, in spiritual form, into the Kingdom (Ephesians 4:7-10).
Why the NEED for Jesus?
Faith; that is, believing that God is true and will do as He has promised, has always been the KEY to God’s heart and covenant relationship with Him but God, in His perfect holiness, will NOT permit your destructive sin to enter His Kingdom as it is SIN found in Satan that initiated the rebellion which prefaced and necessitated the creation of Time, this Earth, our genome, as a repository to deal with that rebellion apart from the Kingdom (1 John 3:8b); therefore, God will NOT permit a repeat of the Heavenly rebellion by permitting sin into His Kingdom and unless your sin has received the atonement and your spirit controlled by the Holy Spirit through sanctification by faith in Jesus as your atoning sacrifice, you will die in your sin and die the “second death” in Perdition (John 8:24).
Jesus as Lord and His blood atonement over your life through imputed righteousness is the ONLY WAY to the Father’s presence (1 Corinthians 5:21; John 14:6).