1 Corinthian 4:15 (KJV)
“For though ye have ten thousand instructors in Christ, yet have ye not many fathers: for in Christ Jesus I have begotten you through the gospel.”
As for the Greek, is exactly as you said. The modern translation change idiomatically to became your father, including the NASB, which is surprising. But in any event, it is not an honorific, it is a statement of fact.
I know...I was surprised at the NASB rendering. Explains why we need to have the Greek at our disposal.