John opens his Gospel with one of the most famous sentences in literature: "In the beginning was the Word." The Greek word he uses is Logos. What that word meant in first-century Jewish and Greek thought — and why John chose it — is the doorway into the Gospel of John.
"Agape" is the New Testament's most distinctive word for love — used 320+ times, often where you would have expected a different Greek word. What it means, how it differs from the other Greek words for love, and why Christian writers chose it deliberately.