Israel and the Church
Israel (spiritually born-again Jews) and the Church (born-again believers of the Church Age—the body of Christ) are two invisible, spiritual “temples” designed by God in eternity past for worship of God for all eternity-future (Acts 4:10-12; 17:24,25; Matthew 16:18; 1 Peter 2:5; Hebrews 8:1,2,5; Revelation 21:22). These two temples will be complete when all members receive resurrection bodies at the end of time-history. This is absolutely fantastic.
Picture this: Christ on the cross extends his arms outward, one toward Israel, the other toward the Church. Christ is the cornerstone/crossover place that unites Israel and the Church forever.
Christ is the center of the universe, time, and eternity, and every living creature shall see Him as the resurrection and eternal life when Christ judges from His Great White Throne. Believers will be spectators, not participants, as we watch all unbelievers of history bow to Christ, acknowledging him as Savior and God. But it will be too late for them because court is in session and they will be sentenced to the lake of fire for not believing in Christ, but believing in themselves instead.
Rejection of Christ is the only unpardonable sin.