Ephesians 2:8-10 does not mean we don't need works in the end. Just that we don't need them in the beginning. Im quoting from an article here.
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When we were saved, as Christians (Christ followers Acts 11:26), we were placed into Christ”s Kingdom, which is simply the Kingdom of God under Christ’s control.
Ephesians 2:4-10
4 But God, who is rich in mercy, because of His great love with which He loved us, 5 even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved), 6 and raised us up together, and made us sit together in the heavenly places in Christ Jesus, 7 that in the ages to come He might show the exceeding riches of His grace in His kindness toward us in Christ Jesus. 8 For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, 9 not of works, lest anyone should boast. 10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them. NKJV
Colossians 1:12-14
12 giving thanks to the Father who has qualified us to be partakers of the inheritance of the saints in the light. 13 He has delivered us from the power of darkness and conveyed us into the kingdom of the Son of His love, 14 in whom we have redemption through His blood, the forgiveness of sins. NKJV
This is the reason why I would say something like “we were saved into the Kingdom of Christ,” because that is where all Christians were placed by God when we got saved.
Out of those who get saved, only those who trust and believe Jesus Christ, and believe the Gospel are sealed and guaranteed an inheritance.
Ephesians 1:13-14
13 In Him you also trusted, after you heard the word of truth, the gospel of your salvation; in whom also, having believed, you were sealed with the Holy Spirit of promise, 14 who is the guarantee of our inheritance until the redemption of the purchased possession, to the praise of His glory. NKJV
The rest of the Christians, who were saved into the Kingdom of Christ, do not have a permanent place in the family. In other words, they are in the family, but they will not remain, or abide in the family forever, according to the Word of the Lord written in John 8:34-36 below.
John 8:34-36
34 Jesus answered them, “Most assuredly, I say to you, whoever commits sin is a slave of sin. 35 And a slave does not abide in the house forever, but a son abides forever. 36 Therefore if the Son makes you free, you shall be free indeed. NKJV
The only Christians, who are set free from being a slave to sin, are the ones who abide (remain) in Jesus. Check the verses below, and know that there is not a church left in the Bible belt that is teaching these verses, but wouldn’t they teach them if they trusted Jesus? Welcome to the last days!
John 15:4-6
4 Abide in Me, and I in you. As the branch cannot bear fruit of itself, unless it abides in the vine, neither can you, unless you abide in Me. 5 “I am the vine, you are the branches. He who abides in Me, and I in him, bears much fruit; for without Me you can do nothing. 6 If anyone does not abide in Me, he is cast out as a branch and is withered; and they gather them and throw them into the fire, and they are burned. NKJV
1 John 3:4-6
4 Whoever commits sin also commits lawlessness, and sin is lawlessness. 5 And you know that He was manifested to take away our sins, and in Him there is no sin. 6 Whoever abides in Him does not sin. Whoever sins has neither seen Him nor known Him. NKJV
The only way to abide in Jesus Christ is to obey His commands, and so this is why it is written that Jesus is the source of eternal salvation for those who obey Him, but no body preaches these verses."
----Alan Ballou howtostopsinning.org