i disagree with your guess work
but your out of context OT verse means nothing in regards to the conversation 🤔
8104. shamar
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Strong's Concordance
shamar: to keep, watch, preserve
Original Word: שָׁמַר
Part of Speech: Verb
Transliteration: shamar
Phonetic Spelling: (shaw-mar')
Definition: to keep, watch, preserve
5083. téreó
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Strong's Concordance
téreó: to watch over, to guard
Original Word: τηρέω
Part of Speech: Verb
Transliteration: téreó
Phonetic Spelling: (tay-reh'-o)
Definition: to watch over, to guard
Usage: I keep, guard, observe, watch over.
His sheep do keep His commandments even if we may stumble... He abides in us... we are made new... and we hear His voice
this has nothing to do with the loss of salvation or gaining it by works as you like to push🤔
1 john 3
4
Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
romans 3
20
Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
21 But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets;
22 Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:
23 For all have sinned, and come short of the glory of God;
24 Being justified freely by his grace through the redemption that is in Christ Jesus:
Ephesians 2:8 - For by grace are ye saved through faith; and that not of yourselves: [it is] the gift of God
James 1:17 - Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning.
Romans 11:29
29 For the gifts and calling of God are without repentance.