'Son' in the Bible

The words of Amos, who was among the herdsmen of Tekoa, which he saw concerning Israel in the days of Uzziah king of Judah, and in the days of Jeroboam the son of Joash king of Israel, two years before the earthquake.

Then Amos answered Amaziah, "I was no prophet, neither was I a prophet's son; but I was a herdsman, and a farmer of sycamore figs;

I will turn your feasts into mourning, and all your songs into lamentation; and I will make you wear sackcloth on all your bodies, and baldness on every head. I will make it like the mourning for an only son, and its end like a bitter day.