King James Version
But if thou shalt indeed obey his voice, and do all that I speak; then I will be an enemy unto thine enemies, and an adversary unto thine adversaries.English Standard Version
"But if you carefully obey his voice and do all that I say, then I will be an enemy to your enemies and an adversary to your adversaries.New International Version
If you listen carefully to what he says and do all that I say, I will be an enemy to your enemies and will oppose those who oppose you.