Not every human benefit is of the same order. Some gifts concern inward religious life: attentiveness in worship, the sweetness of obedience, tranquility and readiness to accept truth. Others make social life possible or convenient, including clothing, food, shelter and productive skills.
Spiritual gifts concern the formation of the heart and the experience of servanthood. Practical and civilizational conveniences sustain ordinary social and economic life. The two have different roles; worldly luxury should not automatically be equated with the highest religious good.
A Qur’anic address meant for many human settings privileges intelligible, widely relevant signs. A king may enjoy an unusually refined privilege while a common household is more immediately concerned with water and food. Likewise, the finer aspects of personal spiritual experience are not equally accessible to every reader.
The distinction enables the interpreter to discuss gratitude for worldly means, purification of the heart and moderation without collapsing the different kinds of divine favor into one.