Piety or Profit

None of the righteous ever received his reward quickly, but waits for it.  If God paid the wages of the righteous immediately, we would soon be engaged in business, not godliness; though we would appear to be righteous, we would in fact be pursuing not piety but profit.

2 Clement 20:3-4: This is from the earliest non-Biblical Christian sermon on record, arguably delivered in Corinth in about 100CE.