'Seventeen' in the Bible

When Joseph was seventeen years old, he was helping his brothers tend their flocks. He was a young man at that time, as were the children of Bilhah and Zilpah, his father's wives. But Joseph would come back and tell his father that his brothers were doing bad things. Now Israel loved Joseph more than all his brothers, since he was born to him in his old age, so he had made a richly-embroidered tunic for him.

He lived for seventeen more years in Egypt, until he was 147 years old.