gatāgatair vartu-guṇair na sajjate
ahaṁ-mateḥ saṁsṛti-hetubhiḥ param
The word ahaṁ-mateḥ here indicates the conditioned living entity, who becomes manifest with the false ego of a particular material body. By contrast, the Personality of Godhead is unaffected by the modes of nature, and thus He is never covered by a material body and never subject to false ego. As described here, the Lord is eternally infallible and pure.