Philo Judaeus Quod Deus Sit Immutabilis 69

[69] and therefore it is that it appears to me that with these two principal assertions above mentioned, namely, that God is as a man and that God is not as a man, are connected two other principles consequent upon and connected with them, namely, that of fear and that of love; for I see that all the exhortations of the laws to piety, are referred either to the love or to the fear of the living God. To those, therefore, who do not attribute either the parts or the passions of men to the living God, but who, as becomes the majesty of God, honour him in himself, and by himself alone, to love him is most natural; but to the others, it is most appropriate to fear him.