I’m a Bible only . Sealed means ownership that cannot be broken. You are letting your “ personal “ beliefs influence what you read in scripture just like Calvinists do.
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Amen! No one can break the seal of God.
Strong's Concordance
arrabón: an earnest (a part payment in advance for security)
Original Word: ἀρραβών, ῶνος, ὁ
Part of Speech: Noun, Masculine
Transliteration: arrabón
Phonetic Spelling: (ar-hrab-ohn')
Definition: an earnest (a part payment in advance for security)
Usage: an earnest, earnest-money, a large part of the payment,
given in advance as a security that the whole will be paid afterwards.
https://biblehub.com/greek/728.htm
<1,,728,arrabon>
originally, "earnest-money" deposited by the purchaser and forfeited if the purchase was not completed, was probably a Phoenician word, introduced into Greece. In general usage it came to denote "a pledge" or "earnest" of any sort;
in the NT it is used only of that which is assured by God to believers; it is said of the Holy Spirit as the Divine "pledge" of all their future blessedness, 2 Corinthians 1:22; 5:5; in Ephesians 1:14; 4:30 particularly of their eternal inheritance.
https://www.studylight.org/dictionaries/ved/e/earnest.html
2 Corinthians 1:21 Now it is God who makes both us and you stand firm in Christ. He anointed us, 22 set his seal of ownership on us, and put his Spirit in our hearts as a deposit,
guaranteeing what is to come.
2 Corinthians 5:5 - Now it is God who has made us for this very purpose and has given us the Spirit as a deposit,
guaranteeing what is to come.
Ephesians 1:13 - 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.
Ephesians 4:30 - And do not grieve the Holy Spirit of God, by whom you were
sealed unto/for the day of redemption.