I Paul (egw Paulo). Asserts all his personal and apostolic authority. For both words see also 1 Thessalonians 2:16 ; 2 Corinthians 10:1 ; Colossians 1:23 ; Ephesians 3:1 . If ye receive circumcision (ean peritemnhsqe). Condition of third class and present passive subjunctive, a supposable case, but with terrible consequences, for they will make circumcision a condition of salvation. In that case Christ will help them not at all.