All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
We seek refuge in Allah from this statement. Allah is the Powerful and the Firm Possessor of Strength.
The Attribute of strength is an Attribute that Allah has always possessed and it is not permissible for a Muslim to think that Allah Almighty is getting more perfect or that He has a deficiency that He perfects as days pass.
Rather, Allah Almighty, is described by the Attributes of perfection and majesty since eternity. Therefore, it is not permissible for you to imagine this; rather, you must believe that Allah was and is still described with all Attributes of perfection and free from every imperfection and deficiency.
Allah Knows best.