As though he needed anything (prosdeomenos tinos). Present middle participle of prosdeomai, to want besides, old verb, but here only in the N.T. This was strange doctrine for the people thought that the gods needed their offerings for full happiness. This self-sufficiency of God was taught by Philo and Lucretius, but Paul shows that the Epicurean missed it by putting God, if existing at all, outside the universe.
Seeing he himself giveth to all (autos didous pasin). This Supreme Personal God is the source of life, breath, and everything. Paul here rises above all Greek philosophers.