Because we cannot see even the soul within ourself; we are seeing only the body. So what to speak of the Supreme Spirit? That is not possible. Yasyāvatāra jñāyante śarīriṣv aśarīriṇaḥ. Therefore it is the inconceivable power that the incarnation of God appears before us.
'svarūpa'-lakṣaṇa, āra 'taṭastha-lakṣaṇa'
- ei dui lakṣaṇe 'vastu' jāne muni-gaṇa
The symptoms are analyzed in two divisions. Svarūpa-lakṣaṇa means the symptom which (is) always present. That is called svarūpa-lakṣaṇa. And taṭastha-lakṣaṇa, the symptoms which are sometimes present and sometimes not present. They are called... In this way, the experienced sages, they analyze the characteristics of the avatāra, or God—two symptoms. One symptom is always there. As soon as there is God, that constant symptom is there. And there are other symptoms which may appear, sometimes may not appear.
ākṛti, prakṛti, svarūpa—svarūpa-lakṣaṇa
- kārya-dvārā jñāna—ei taṭastha-lakṣaṇa
Ākṛti, prakṛti. The form and the activities, all uncommon. Just like Kṛṣṇa. Kṛṣṇa, He married sixteen thousand wives and He divided Himself into sixteen thousand. Kṛṣṇa. This is called ākṛti. This is uncommon.