'Seventeen' in the Bible

These are the generations of Jacob. Joseph, being seventeen years old, was feeding the flock with his brethren; and the lad was with the sons of Bilhah, and with the sons of Zilpah, his father's wives: and Joseph brought unto his father their evil report.

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.

And Jacob lived in the land of Egypt seventeen years: so the whole age of Jacob was an hundred forty and seven years.