'Versed' in the Bible

Then the Jews were perplexed. They said, “How did this man become learned [so versed in the Scriptures and theology] without formal training?”

Meanwhile, a Jew named Apollos arrived in Ephesus. He was a native of Alexandria, an eloquent man, and well versed in the Scriptures.

For the report of your obedience has reached everyone, so that I rejoice over you, but I want you to be wise in what is good and innocent in what is evil.

If I possess the gift of prophecy and am versed in all mysteries and all knowledge, and have such absolute faith that I can remove mountains, but am destitute of Love, I am nothing.