ⲡⲓⲥⲧⲉⲩⲉⲓ (Old Nubian) comes from Coptic ⲡⲓⲥⲧⲉⲩⲉ, from Ancient Greek πιστεύω, from Ancient Greek πίστις, from Proto-Indo-European bʰeydʰ- — to compel, force; to trust.
ⲡⲓⲥⲧⲉⲩⲉⲓ (Old Nubian): to believe