Were gain to me (εν μο κερδη). "Were gains (plural, see on Philippians 1:21) to me (ethical dative)." Paul had natural pride in his Jewish attainments. He was the star of hope for Gamaliel and the Sanhedrin.

Have I counted (ηγημα). Perfect middle indicative, state of completion and still true.

Loss (ζημιαν). Old word for damage, loss. In N.T. only in Phil. and Acts 27:10; Acts 27:21. Debit side of the ledger, not credit.