All praise to God, the Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly realms because we are united with Christ. Even before he made the world, God loved us and chose us in Christ to be holy and without fault in his eyes. Ephesians 1:3-4

a. Before the foundation of the world

b. It’s our decision

God decided in advance to adopt us into his own family by bringing us to himself through Jesus Christ. This is what he wanted to do, and it gave him great pleasure. Ephesians 1:5

a. Predestined

b. Christians are granted the family rights and privileges

So we praise God for the glorious grace he has poured out on us who belong to his dear Son. Ephesians 1:6

a. Those who belong to His dear Son

He is so rich in kindness and grace that he purchased our freedom with the blood of his Son and forgave our sins. Ephesians 1:7

a. What does Redemption mean?

Thank God! Once you were slaves of sin, but now you wholeheartedly obey this teaching we have given you. Now you are free from your slavery to sin, and you have become slaves to righteous living. Romans 6:17-18

He has showered his kindness on us, along with all wisdom and understanding. God has now revealed to us his mysterious will regarding Christ—which is to fulfill his own good plan. Ephesians 1:8-9

a. Wisdom and understanding

But people who aren’t spiritual can’t receive these truths from God’s Spirit. It all sounds foolish to them and they can’t understand it, for only those who are spiritual can understand what the Spirit means. 1 Corinthians 2:14

b. The Plan of God

Furthermore, because we are united with Christ, we have received an inheritance from God, for he chose us in advance, and he makes everything work out according to his plan. God’s purpose was that we Jews who were the first to trust in Christ would bring praise and glory to God. Ephesians 1:11-12

All praise to God, the Father of our Lord Jesus Christ. It is by his great mercy that we have been born again, because God raised Jesus Christ from the dead. Now we live with great expectation, and we have a priceless inheritance—an inheritance that is kept in heaven for you, pure and undefiled, beyond the reach of change and decay. 1 Peter 1:3-4

And when you believed in Christ, he identified you as his own by giving you the Holy Spirit, whom he promised long ago. The Spirit is God’s guarantee that he will give us the inheritance he promised and that he has purchased us to be his own people. He did this so we would praise and glorify him. Ephesians 1:13-14

God identified us. Some versions say, marked in him with a seal . . .

a. A divine trademark of ownership

And through your faith, God is protecting you by his power until you receive this salvation, which is ready to be revealed on the last day for all to see. So be truly glad. There is wonderful joy ahead, even though you must endure many trials for a little while. These trials will show that your faith is genuine. It is being tested as fire tests and purifies gold—though your faith is far more precious than mere gold. So when your faith remains strong through many trials, it will bring you much praise and glory and honor on the day when Jesus Christ is revealed to the whole world. 1 Peter 1:5-9

https://ag.org/Beliefs/Position-Papers/Assurance-of-Salvation