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The obvious implication is that man's fate in the hereafter will be a consequence of, and invariably conditioned by, his spiritual attitude and the manner of his life during the first, earthly stage of his existence. In this instance, the expression "from far away" is apparently used in a sense similar to sayings like "far off the mark" or "without rhyme or reason", and is meant to qualify as groundless and futile all negative speculations about what the Qur'an describes as al-ghayb ("that which is beyond the reach of human [or "a created being's"] perception"): in this case, life after death.
Not only did they reject the Truth of the Unseen (the true Reality), but they spread all sorts of false and malicious insinuations at the preachers of Truth, calling them dishonest men, liars, hypocrites, and so on. They did it like a coward taking up a sneaking position far from the fight and speeding arrows at a distant target.