God knows that what they are calling on besides Him is nothing. He is the Noble, the Wise.
Translation endnotes
[29:41-43] The example is interesting. The spider is not the male one (ankab), but a female one (ankabut). Thus, it might be referring to spiders like the Black Widow that eats their males after having an intimate relationship. (The grammatical structure of the verse is similar to that of 40:20).