# fattened calves

"calves that were given plenty of food so that they would be fat" or "young cows that were specially prepared for sacrifice"

# stone of Zoheleth

This is a rocky area near Jerusalem. 

# En Rogel

This was the name of a spring where people got water. 

# all his brothers ... all the men

This is a generalization. 

# all his brothers, the king's sons 

These phrases refer to the same people.

# men of Judah, the king's servants

These phrases refer to the same people.