ONCE SAVED ALWAYS SAVED is heresy!
I disagree.
You forget that YHVH is the YHVH of a brit (covenant) which can never be broken.
Eph 1:9 making known to us the mystery of his will, according to his purpose, which he set forth in Christ
Eph 1:10 as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth.
Eph 1:11 In him we have obtained an inheritance, having been predestined according to the purpose of him who works all things according to the counsel of his will,
Eph 1:12 so that we who were the first to hope in Christ might be to the praise of his glory.
Eph 1:13
In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,
Eph 1:14 who is the guarantee of our inheritance until we acquire possession of it, to the praise of his glory.
Col 1:3 R6We always thank God, the Father of our Lord Jesus Christ, when we pray for you,
Col 1:4 since we heard of R7your faith in Christ Jesus and of R7the love that you have for all the saints,
Col 1:5 because of R8the hope R9laid up for you in heaven. Of this you have heard before in R10the word of the truth, the gospel,
Col 1:6 which has come to you, as indeed R11in the whole world it is R12bearing fruit and increasing—as it also does among you, since the day you R13heard it and understood R14the grace of God in truth,
Col 1:7 just as you learned it from R15Epaphras our beloved R16fellow servant.N1 He is R16a faithful minister of Christ on yourN2 behalf
Col 1:8 and has made known to us your R17love in the Spirit.
Col 1:9 And so, R18from the day we heard, R19we have not ceased to pray for you, asking that R20you may be filled with the knowledge of his will in all R21spiritual wisdom and understanding,
Col 1:10 so as R22to walk in a manner worthy of the Lord, R23fully pleasing to him: R24bearing fruit in every good work and increasing in the knowledge of God;
Col 1:11 R25being strengthened with all power, according to his glorious might, for R26all endurance and patience R1with joy;
Col 1:12 R2giving thanksN1 to the Father, who has qualified youN2 to share in R3the inheritance of the saints in light.
Col 1:13 He R4has delivered us from R5the domain of darkness and transferred us to R6the kingdom of R7his beloved Son,
Col 1:14 R8in whom we have redemption, the forgiveness of sins.
Irrevocable, my standing in Christ is eternal, and nothing in heaven or earth can pluck the believer out of God's hand, that's a promise.