The mark of Yah is clearly stated in Scripture:
Exodus 13:9, "And it shall be as a *sign to you upon your hand and as a memorial between your eyes, that Yahweh's Law shall be in your mouth; for with a strong hand Yahweh has brought you out of Egypt."
*Sign is Word #226, Hebrew Dictionary, Strong's Exhaustive Concordance, meaning mark, token, sign, consent, flag, evidence of consent.
and Paul supports this verse:
2 Timothy 2:19, "Nevertheless, the Foundation of Yahweh stands sure, having this seal*: Yahweh knows those who are His, because everyone who reverences the Name of Yahweh departs frominiquity." (iniquity is Lawlessness)
Signs are for memorial laws, they are used to announce the coming of Christ in the flesh.The gospel beforehand.
Signs are for the rebellious Jew. Prophecy for those who do believe (have faith). This is like the example to the unbelieving Jew (no faith) that sought after a sign and refused to walk by faith (the unseen) . God gave them a personal one.
1Co 14:22 Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for "them" which believe.
There is no outward sign that we can perform that can wash away even one sin that has eternal consequences.
A sign on a hand represents the will of men. It acts as is sign in regard to a person’s will as a memorial for their minds. (between the eyes) .The last part of the verse (Exodus 13:9) ,explains it context.
That the LORD's law may be in thy mouth: for with a strong hand hath the LORD brought thee out of Egypt ( last part of the verse you offered )
God does not have a literal hand He is Spirit and not a man as us. It’s simply saying guard the law by guarding your heart reminding them that God delivered them from Egypt.
Like all ceremonial laws as shadows they were used up until the reformation. They like the Sabbath cerimonila law for the memory as reminders are not something we can judge one another with.
The Holy Ghost this signifying, that the way into the holiest of all was not yet made manifest, while as the first tabernacle was yet standing:Which was a figure for the time then present, in which were offered both gifts and sacrifices, that could not make him that did the service perfect, as pertaining to the conscience;Which stood only in meats and drinks, and divers washings, and carnal ordinances, imposed on them until the time of reformation. Heb 9:8
The reformation has come. We are under the new restored order as new creatures.(1 Corinthians 11) The apostate outward Jews that have not been born again that walk by sight are recognized as sign keepers.
It boils down, the unbelieving Jew (no faith) walks by sight after a sign and the Greek /Gentile seek after the wisdom of this world .the intellect of philosophies of men.
For the preaching of
the cross is to them that perish foolishness; but unto us which are saved it is the power of God.For it is written, I will destroy
the wisdom of the wise, and will bring to nothing the understanding of the prudent.Where is the wise? where is the scribe? where is the disputer of this world? hath not God made foolish the wisdom of this world? For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching
to save them that believe.For the
Jews require a sign, and the
Greeks seek after wisdom:
But we preach Christ crucified, unto the
Jews a stumblingblock, and unto
the Greeks foolishness;But unto
them which are called,
both "Jews and Greeks", Christ the
power of God,
and the
wisdom of God. 1Co 1:18
It’s not man's wisdom (philosophy)that teaches us but which the Holy Ghost , Christ teaches us ; comparing spiritual things not seen, with spiritual, not seen. the faith principle. that both the outward Jew and the Gentile disregard in favor of their flesh