ה' אלוקימו, Hashem alone is elokeynu, there is no other kind of divinity which is a partner to Him. We find a similar formulation in Chronicles II 3,10 ואנחנו ה' אלוקינו ולא עזבנוהו, meaning: “although you have golden calves, as far as we are concerned we believe only in Hashem who is our only G’d, and we have not abandoned Him as did Jerobam.”

ה' אחד. He alone, and Him we will serve without resorting to any man-made intermediary such as charms, etc.” (see our commentary on 5,6)

ובכל נפשך, according to the plain meaning of the text “even if it will cost your life.” It must mean this: seeing that the Torah had already covered all the other bases when it wrote בכל ללבך, “with all your heart,” the meaning is that while alive you are to love G’d with all your heart, if your faith and love for G’d is put to the test of your having to choose it over your very survival, you must choose the former.

V'SHINANTAM. An expression of sharpening -- to explain them well, as in (Ps. 64:4), "They sharpened their tongues like swords."