He is a famous jurist.
To become a legal professional, you must pass the bar exam.
法律家 is a broad term for any legal expert or jurist, while 弁護士 specifically means a licensed lawyer who represents clients in court.
法律家 is a general term for anyone versed in law, whereas 法曹 more formally denotes members of the legal profession (lawyers, judges, prosecutors) as recognized by the justice system.
Compound of 法律 (law) and 家 (person specializing in a field).