שָׁמַר
From LSJ
γράμματα στικτὰ οὐ ποιήσετε ἐν ὑμῖν· ἐγώ εἰμι κύριος ὁ θεὸς ὑμῶν → you shall not make tattooed signs on yourselves; I am your Lord God
English (Strong)
a primitive root; properly, to hedge about (as with thorns), i.e. guard; generally, to protect, attend to, etc.: beward, be circumspect, take heed (to self), keep(-er, self), mark, look narrowly, observe, preserve, regard, reserve, save (self), sure, (that lay) wait (for), watch(-man).