sorry for the confusion
justification is a gratuitous gift of God, no works of ours
this is the initial or first grace we receive
receiving the grace of justification we have union with God & His saints in the communion of saints thru Christ, by grace, with the power of His life, grace, merits & the Holy Spirit.
Our good works after we receive the grace of justification are transformed by grace and performed in grace united with Christ and given life of the spirit because of God's grace operating in us!
You have not corrected the contradiction. You have only hidden works behind the word “grace.” You say justification is free, but only “initial,” then claim it must be preserved through obedience and can be lost through sin. Scripture never teaches temporary justification or justification maintained by good works.
Paul says, “Therefore being justified by faith, we have peace with God” ~Romans 5:1. He also says, “Being now justified by his blood, we shall be saved from wrath through him” ~Romans 5:9. The believer’s standing rests upon Christ’s blood, not upon whether he performs enough grace-enabled works afterward.
Galatians 5:4 does not teach that believers lose grace by committing a so-called “deadly sin.” Paul identifies those who have fallen from grace: “Whosoever of you are justified by the law; ye are fallen from grace.” The warning is against seeking justification through works, which is exactly where your argument leads.
Romans 2:7 does not prove that eternal life is earned by patient continuance in good works. Paul’s conclusion is that no one meets God’s righteous standard: “By the deeds of the law there shall no flesh be justified in his sight” ~Romans 3:20. That is why sinners must be “justified freely by his grace” ~Romans 3:24.
You say believers do not have eternal salvation, but Jesus says, “He that believeth on me hath everlasting life” ~John 6:47. He also says the believer “hath everlasting life, and shall not come into condemnation” ~John 5:24, and, “I give unto them eternal life; and they shall never perish” ~John 10:28.
Good works are the evidence of salvation, not the means of preserving justification. Calling works “grace-enabled” does not make them part of the gospel, because Paul says, “If by grace, then is it no more of works” ~Romans 11:6. Christ does not begin salvation and wait for man to finish it. “He is able also to save them to the uttermost” ~Hebrews 7:25.