As stated by Kṛṣṇa Himself throughout Bhagavad-gītā, there is no truth superior to Him. King Vena was imitating the Supreme Personality of Godhead and was also speaking out of false pride, presenting himself as the Supreme Lord. These are all characteristics of a demonic person.
If you are intelligent, you should know that there is no personality superior to me, who can accept the first oblations of all sacrifices
Expressions researched:
"If you are intelligent, you should know that there is no personality superior to me, who can accept the first oblations of all sacrifices"
Srimad-Bhagavatam
SB Canto 4
If you are intelligent, you should know that there is no personality superior to me, who can accept the first oblations of all sacrifices.
King Vena continued: For this reason, O brāhmaṇas, you should abandon your envy of me, and, by your ritualistic activities, you should worship me and offer me all paraphernalia. If you are intelligent, you should know that there is no personality superior to me, who can accept the first oblations of all sacrifices.