For an Informed Love of God
οὐδείς means “no one (nothing).”
οὐδείς can serve two masters” (Matt 6:24).
Mounce's Expository Dictionary (abridged):
Adjective: οὐδείς (oudeis), GK G4029 (S G3762), 227x. οὐδείς is the negated form of εἷς meaning “not one, no one, none, nothing” (Mt. 5:13; 6:24; 19:17).