is in reference to the Quraish tribe (Polytheists - idol worshippers) who had made a treaty with the Muslims, but negated that treaty and aided others to fight against Muslims in Mecca. This is affirmed in the ayat before the one quoted above:When the sacred months are over, slay the polytheists wherever you find them. Arrest them, besiege them and lie in ambush for them
And it's not wise to compare Muhammad to Jesus. During Jesus' time he was considered a Jewish blasphemer. I suggest reading this book:... except those polytheists who have not dishonored their treaties with you and have not aided anyone against you. With these, fulfill your treaties till the appointed term. Indeed, God loves the righteous.
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