OT and NT, same:
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2 Timothy 2:19, "However, the solid foundation of Yah stands firm, having this seal*, “ [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT][FONT=Times New Roman, serif]
knows those who are His, Let everyone who names the Name of Messiah turn away from unrighteousness.”
Strong's Concordance *"seal"is word #G4973 - sphragis: a seal, a signet, Original Word: σφραγίς, ῖδος, ἡ, Part of Speech: Noun, Feminine, Transliteration: sphragis, Phonetic Spelling: (sfrag-ece'), Short Definition: a signet-ring, impression of a seal, the proof, Definition: a seal, signet ring, the impression of a seal, that which the seal attests, the proof.
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Exodus 13:9, “And it shall be as a *sign to you on your hand and as a reminder between your eyes, that the Torah (Instructions/Law) of [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT][FONT=Times New Roman, serif]
is to be in your mouth, for with a strong hand [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT][FONT=Times New Roman, serif]
has brought you out of Mitsrayim.”
The word *Sign is word #H226 – owth from Strong's Exhaustive Concordance, Hebrew Dictionary: meaning mark, token, sign, consent, flag, evidence of consent.[/FONT]
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H226 [/FONT][FONT=Times New Roman, serif]
אוֹת [/FONT][FONT=Times New Roman, serif]
'owth (oth), a signal (literally or figuratively), as a flag, beacon, monument, omen, prodigy, evidence, etc., [probably from H225 (in the sense of appearing)], KJV: mark, miracle, (en-)sign, token.[/FONT]
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The word “unrighteousness” is word #G93 ἀδικία – adikia, ad-ee-kee'-ah, (legal) injustice (properly the quality, by implication the act); moral wrongfulness (of charter, life or act):—iniquity, unjust, unrighteousness, wrong.[/FONT]
[FONT=Times New Roman, serif]1 John 5:17, "All unrighteousness is sin, and there is a sin not unto death."[/FONT]
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1 John 3:4, "Whoever commits sin, transgresses also the Law; for sin is the transgression of the Law."[/FONT]