Galatians 6:3

3Ifεἰforγὰρthinks [himself]δοκεῖanyoneτιςto beεἶναίsomethingτιnothingμηδὲνbeingὤν,he deceivesφρεναπατᾷhimselfἑαυτόν·

For if anyone thinks [himself] to be something being nothing, he deceives himself.