Believers have a greater love for Allah than those who set up equals to Him. This is because Allah is infinitely good, just, compassionate, and loves His servants infinitely. Believers express this love by displaying the compassion and forgiveness that the morality of the Qur'an grants them. This creates a deeper bond between Allah and the believers, and they experience a profound feeling of love and respect from Him in return.
This is a blessing that is only granted to believers, and is the most perfect and beautiful form of love.