In Galatians, Paul boasts about how he was advancing in Judaism. Look at Galatians 1 on an online source.

That quote is from 1 Corinthians 9. 1 Cornithians 9:19-23.

The question is: Which is it? Did he become like a Jew? Or was he advanced in Judaism beyond those of his own age?

Shalom,
Gretta

image"Sadness drives G-d away from us." ~ Rebbe Nachman of Breslov