It’s a very important question, I use this example to explain to people the nature of how the Qurann was sent to people part after another, not one book from the sky like the Holy Bible or the Holy Torah:
* First Allah (God) sent this verse (2:219):
219. They ask you (O Muhammad) concerning “alcoholic drink” and “gambling”. Say: “In them is a great damage, and (some) benefit for men, but the sin of them is greater than their benefit.” …
So the first rule was: (Regarding alcohol : there is a damage, and a benefit, but the damage is much greater).
** Then Allah sent another verse, making drinking alcohol more strict (4:43):
43. O you who believe! Approach not As-Salat (the prayer) when you are in a drunken state until you know (the meaning) of what you utter, …..
So the second rule was: (Never go to Salat (that is Islamic prayer) while you are drunk, because you have to perfectly understand what you are saying).
*** Finally, came the ultimate forbidding of drinking alcohol (5:90):
90. O you who believe! Intoxicants (all kinds of alcoholic drinks), gambling, Al-Ansab , and Al-Azlam (arrows for seeking luck or decision) are an abomination of Shaitan‘s (Satan) handiwork. So avoid (strictly all) that (abomination) in order that you may be successful.
In Arabic, the word (avoid), means (never come even near), so it means (strictly forbidden).