Below verse of Bhagwat Gita also says that:
vettha tvam purushottama
deva-deva jagat-pate" (Bhagwat Gita: Chapter Ten verse 15)
"Arjuna said to Lord Krishna: Indeed, You alone know Yourself by Your own internal potency, O Supreme human being, origin of all, Lord of all beings, God of gods, Lord of the universe!"
As per Bhagwat Gita, Supreme God Lord Krishna can be known by His devotees only. Those people who hate the Lord & are of demonic nature, do not know Him. Only those devotees who know Lord Krishna as Purusottama can know about Him who is the creator of all living entities. He is also the supreme controller of everyone & all these universes. He is the origin of all other demigods, so to worship some demigod is indirectly worshiping that Supreme Lord only, though not correctly as we can worship Him directly also. That Supreme Lord is also worshipped by all the demigods so we should directly worship that Lord.
Jai Shri Krishna
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