As an experiment, I translated Genesis 9:7 into Swahili and asked a native-speaker which he thought was the best translation.
- Na nyinyi zaeni, na muongezeke; mkaongezeke juu ya nchi, na kuongezeka juu yake. (NIV)
- Nanyi zaeni, mkaongezeke; naam, mkaongezeke, mkaijaze nchi (ESV)
- Na ninyi, zaeni, mkaongezeke; zaeni kwa wingi katika nchi na mkaongezeke ndani yake. (NVI)
My friend in Uganda said that the ESV à Swahili is best.