SE 16 Teddy makes a good point here, S.GH. If you want to use "increasing", you would do better to say: The number of creatures is increasing rapidly.The creatures are increasing rapidly is ambiguous. Is each one increasing in size? Or maybe increasing in intelligence or understanding?
In the old biblical statement "Be fruitful and multiply", God isn't ordering people to do math.Are they some kind of creature that can do mathematics? If yes, then the first sentence is also ambiguous.
I didn't say it wasn't. See the word "ambiguous" in my post? I am a creature that can reproduce AND use a calculator.In the old biblical statement "Be fruitful and multiply", God isn't ordering people to do math.
This use of multiply is still with us, according to MW: 1 a : to become greater in number : increase in extent :