Ephesians 1:
3 Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ. 4 For he chose us in him before the creation of the world to be holy and blameless in his sight. In love 5 he predestined us for adoption to sonship through Jesus Christ, in accordance with his pleasure and will— 6 to the praise of his glorious grace, which he has freely given us in the One he loves.
The doctrine of election can be harmonized with the doctrine of an all-loving God by understanding the meaning of “in Christ” in Ephesians 1:3-14.
1:3, “Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing
in Christ. For he chose us
in him before the creation of the world to be holy and blameless in his sight. In love he predestined us to be adopted as his sons
through Jesus Christ, in accordance with his pleasure and will, to the praise of his glorious grace, which he has freely given us
in the One he loves.
In him we have redemption through his blood, the forgiveness of sins, in accordance with the riches of God’s grace that he lavished on us with all wisdom and understanding. And he made known to us the mystery of his will according to his good pleasure which he purposed
in Christ, to be put into effect when the times will have reached their fulfillment—to bring all thins in heaven and on earth together
under one head, even Christ.
In him we were also chosen, having been predestined according to
the plan of Him who works out everything in conformity with the purpose of his will, in order that we, who were the first to hope
in Christ, might be for the praise of his glory. And you also were included
in Christ when you heard the word of truth, the gospel of your salvation.
Having believed, you were marked
in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.”
In the EPH passage we can see that
what the all-loving God predestined was NOT that some souls would be damned, but rather
the plan of salvation to elect potentially all humanity, whom He loves and atoned for (1TM 2:3-5), if they exercise their God-given grace of volition to accept His offer of
grace IN Christ (2THS 2:10).