As for completion, it applies to faith and abstract realities. Allah’s blessings encompass concrete things, attributes, and abstract realities.
His religion, meanwhile, is His revealed law, which comprises His commands, prohibitions, and all that He loves. It was therefore more fitting to associate perfection with religion and completion with blessing, just as it was more fitting to ascribe the religion to them and the blessing to Him.
The point is that this blessing is the absolute blessing, which belongs exclusively to the believers. If it is said that Allah has bestowed no blessing upon the unbeliever in this sense, that is correct. The second kind is qualified blessing, such as health, wealth, bodily well-being, great prestige, many children, a good wife, and the like. Such blessings are shared by the righteous and the wicked, the believer and the unbeliever. If it is said that Allah has bestowed blessings upon the unbeliever in this sense, that too is true.
An unqualified denial or affirmation is therefore not valid, except in one respect: since qualified blessings serve to draw the unbeliever gradually towards ruin, ultimately leading to punishment and misery, it is as though they were never blessings at all, but rather a trial—as Allah Himself calls them in His Book. He, the Exalted, says (89:15, 16):
“As for man, when his Lord tests him by honouring him and granting him blessings, he says, ‘My Lord has honoured me.’ But when He tests him by restricting his provision, he says, ‘My Lord has humiliated me.’ No!”
That is: Not everyone whom I honour in this world and grant a life of ease has thereby received My blessing; rather, this is a trial and a test from Me. Nor does My restricting someone’s provision to what meets his needs, with a measured surplus, necessarily mean that I have humiliated him. Rather, I test My servant with blessings just as I test him with calamities.
If it is asked: How can this meaning be reconciled with His words, “honouring him,” which affirm that He honoured him, when He then rejects the man’s statement, “My Lord has honoured me,” saying, “No!”—meaning: This is not an honour from Me, but a trial? It thus seems that He both affirms and denies having honoured him.
It has been said in reply: The honour affirmed is different from the honour denied, and both are analogous to blessings