'Expert' in the Bible

One of them, an expert in the Law, tested him by asking,

Just then an expert in the Law stood up to test Jesus. He asked, "Teacher, what must I do to inherit eternal life?"

As an expert builder using the grace that God gave me, I laid the foundation, and someone else is building on it. But each person must be careful how he builds on it.

Do all you can to send Zenas the expert in the Law and Apollos on their way, and see that they have everything they need.