Evangelism is the belief that "believers" have an obligation to tell you about their religious brand - and more to save themselves from hellfire for failing to do so as they've been "commanded" to do (so much for "free will") than for whether you accept their "beliefs" to save yourself from hellfire ( because if you roast for all eternity for failing to "believe' what their selling, that's your problem, not theirs) - but the onus to convince you of the necessity and validity of those "beliefs" is up to you.