SB 12.10.30

naitāvatā bhagavataḥ
 sva-māyā-maya-vṛttibhiḥ
na duṣyetānubhāvas tair
 māyinaḥ kuhakaṁ yathā
Synonyms: 
na — not; etāvatā — by such (a show of humility); bhagavataḥ — of the Personality of Godhead; sva-māyā — of His own illusory energy; maya — consisting of; vṛttibhiḥ — by the activities; na duṣyeta — is not spoiled; anubhāvaḥ — the power; taiḥ — by them; māyinaḥ — of a magician; kuhakam — the tricks; yathā — just as.
Translation: 
This apparent humility is simply a show of mercy. Such behavior of the Supreme Lord and His personal associates, which the Lord effects by His own bewildering potency, does not spoil His power any more than a magician’s powers are diminished by his exhibition of tricks.