παρεισ-έρχομαι · pareis-erchomai — LSJ
come, go in beside, to be inserted, come in, to be introduced
come or go in beside : Medic., of fingers or instruments, to be inserted, Gal. 18(1).323, 332 : generally, come in, ὅπως . . τύχη παρεισέλθῃ Epicur. Fr. 281p.351U.; παρεισελθόντες ὡς φίλιοι Plb. 1.7.3, al.; νόμος παρεισῆλθεν ἵνα πλεονάσῃ τὸ παράπτωμα Ep.Rom. 5.20 ; π. ἄφνω πρὸς τὴν ἑστίαν Plu. Cor. 23 ; to be introduced, of a side-issue, Gal. 8.749 : c. inf., π. κατασκοπῆσαι Ep.Gal. 2.4.
II occur, suggest itself
occur, suggest itself, of an idea, τινι Vett.Val. 357.9.