This is God's blessing. He told Noah and his family to produce more humans like themselves, so that there would be many of them. The word "multiply" explains how they are to be "fruitful." See how you translated these commands in [Genesis 1:28](../01/28.md). (See: [[rc://en/ta/man/translate/figs-doublet]] and [[rc://en/ta/man/translate/figs-idiom]])
The writer speaks of fear and dread as if they were physical objects that could be upon the animals. AT: "Every living animal ... and all the fish of the sea will be dreadfully afraid of you" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The words "fear" and "dread" mean basically the same thing and emphasize how afraid the animals will be of mankind. AT: "A dreadful fear of you" or "A terrible fear of you" (See: [[rc://en/ta/man/translate/figs-doublet]])
The hand represents control. This can be made active. AT: "They are given into your control" or "I have put them under your control" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])