#They were fruitful and multiplied greatly

The word "multiplied" explains how they were "fruitful." AT: "They had very many children" (See: [[:en:ta:vol2:translate:figs_doublet]])

#were fruitful

Here "fruitful" means to prosper or to have children. (See: [[:en:ta:vol1:translate:figs_idiom]])

#seventeen years

"17 years" (See: [[:en:ta:vol2:translate:translate_numbers]])

#so the years of Jacob's life were one hundred forty-seven years

seven years** - "so Jacob lived 147 years total" (See: [[:en:ta:vol2:translate:translate_numbers]])