“When Grandfather confessed to his Christian friends how much he was impressed by the Sermon on the Mount he was asked, “Why don’t you become a Christian?” “When you convince me that all Christians live according to the Sermon on the Mount, I will be the first to change my religion,” he responded.”
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Attribution note
The candidate is a third-person retelling ('When Grandfather... he responded') framing a Gandhi reply about the Sermon on the Mount; the embedded line is widely credited to Gandhi but is anecdotal (via family/secondary accounts) with no reliable dated primary, and the third-person framing makes it u
Likely origin: Anecdote in 'The Way to God' (ed. by his grandson): Gandhi's reply 'When you convince me that all Christians live according to the Sermon on the Mount, I will be the first to change my religion.' Widely repeated, no reliable primary.
Review the attribution sourceAbout this quote
Widely repeated as an anecdote, this exchange rests on no reliable primary source, so treat the exact wording with caution. The point holds regardless: a belief system gets judged less by its book than by whether its followers actually live it, and the gap between word and behavior is where credibility drains away.
When to use it
- An employee shrugs at the values poster while watching managers act against every line of it.
- A child copies what a parent actually does, not the lectures the parent delivers.
- A shopper trusts a brand by how it handles complaints, not by its mission statement.

