KJV : But take diligent <03966> heed <08104> (8798) to do <06213> (8800) the commandment <04687> and the law <08451>, which Moses <04872> the servant <05650> of the LORD <03068> charged <06680> (8765) you, to love <0157> (8800) the LORD <03068> your God <0430>, and to walk <03212> (8800) in all his ways <01870>, and to keep <08104> (8800) his commandments <04687>, and to cleave <01692> (8800) unto him, and to serve <05647> (8800) him with all your heart <03824> and with all your soul <05315>.
NASB : "Only be very careful to observe the commandment and the law which Moses the servant of the LORD commanded you, to love the LORD your God and walk in all His ways and keep His commandments and hold fast to Him and serve Him with all your heart and with all your soul."
NASB# : "Only<7534> be very<3966> careful<8104> to observe<6213> the commandment<4687> and the law<8451> which<834> Moses<4872> the servant<5650> of the LORD<3068> commanded<6680> you, to love<157> the LORD<3068> your God<430> and walk<1980> in all<3605> His ways<1870> and keep<8104> His commandments<4687> and hold<1692> fast<1692> to Him and serve<5647> Him with all<3605> your heart<3824> and with all<3605> your soul<5315>."