In plain words
See, in Viṣṇu's hand are the conch, the discus, the mace and the lotus. That is, the four, sound, strength, time and the heart, are right in God's hand. In one of Īśvara's hands is the ḍamaru. In another hand is the trident. This ḍamaru is the sign of sound; that is, sound is in God's hand. The trident is the form of the three times. So time too is right in Īśvara's hand. Seen in this way, God is one! The forms and names are different.
Until you know it, you are a jīva! Once you know it, you yourself are God!
Here is a fine example from the daily experience of the people of Bhārata, seen from the worldly view. The Vaiṣṇavas go to Tirupati. The Śaivas go to Tirupati too. Yet the one who is there is Veṅkaṭaramaṇa alone! When Śaivas go, they say, ‘Veṅkaṭeśvarā!’ When Vaiṣṇavas go, they say, ‘Veṅkaṭaramaṇā!’ There Veṅkaṭeśvara, here Veṅkaṭaramaṇa; their feelings differ, but God is one! Whether you say ‘Veṅkaṭaramaṇa’ or ‘Veṅkaṭeśvarā’, He is one! To show a feeling of difference here is nothing but the working of small minds. They called Īśvara ‘Paśupati’. Paśupati means the lord of all paśus. The jīva principle, joined to the Manas and the Buddhi, is called paśu-hood. Among the Vaiṣṇavas they say ‘Gopālā’ for the very same thing. ‘Gopālā’ and ‘Paśupati’ are both one! They say ‘Gopālā’; these say ‘Paśupati’. Names like these have gone on proving the oneness. But man's smallness itself becomes the root cause of this difference. However long we practise sādhana with such small minds, we cannot reach the high state at all. We must recognise the unity in the many. That is true spirituality. You are God! Until you know it, you are a jīva! Once you know it, you yourself are God! So we must enquire well into every principle and think it through with Viveka. Without Viveka, everything goes to waste.