Prostration indicates glorifying and here it refers to full submission to Allah (swt), to the Holy Qur’an, its commands, and to all what it includes.
Whenever we read a verse containing a prostration, then our whole entity has to act in response and hasten to prostrate. As if the verses of prostration include a very great matter, a weighty secret and nice energies of Allah ‘s (swt) bestowments.