Those who dispute about the signs of Allah without any authority bestowed on them,- there is nothing in their breasts but (the quest of) greatness, which they shall never attain to: seek refuge, then, in Allah: It is He Who hears and sees (all things).
In verse 56, it was said: (there is nothing in
their hearts but pride of greatness that they are not [able] to reach). It
means that people who quarrel in the matter of the verses of Allah
without having any valid argument really look forward to rejecting this
faith simply because their hearts are filled with pride and arrogance.
They would like to stay ahead in the game and are so dim-witted that
they have taken for granted that they have this position of strength as a
result of their staunch adherence to their faith, and if they were to
surrender this stance by becoming Muslims, they will be left without any
power and territory of their own. The Qur’an said: +G PL (they are not
[able] to reach), that is, these people will never reach the goals of their
assumed pride, greatness and state power without embracing Islam.
However, had they embraced Islam, honor and greatness would have
followed in their footsteps. (Qurtubi)
Shafi, Muhammad (2008). Maariful Quran. (Vol .7 surah 40 verse 56). English-MaarifulQuran-MuftiShafiUsmaniRA-Vol-7.pdf (islamicweblibrary.com)