God saved us all (Past Tense), is saving us all (Present Tense), and will save the overcomers (Future Tense).God does not save unbelievers.
God saved us all by fashioning us into the body of His Son (Eph 2:14-16). We are born part of the body of Christ, all through the grace of God given us in Christ Jesus before the beginning of time (Titus 3:4-6; 2 Tim 1:8-9).
God is saving us all by NOT imputing against us any sin we now commit (2 Cor 5:18, 19), all sins having been forgiven (Col 2:13, 14) through the Lamb slain from the foundation of the world (Rev 13:8) and revealed at the cross of Calvary (2 Tim 1:9-10).
God will save ONLY the overcomers (Rev 3:5; 21:27) - those who have overcome evil with good (Rom 12:21) - and they will inherit life eternal (Matt 24:13; Mark 10:30).