Al-Matin
Allah is Al-Matin meaning His power is steadfast. It is the same as it was yesterday and as it will remain tomorrow. He is ever constant, firm, and loyal.
From the root m-t-n which has the following classical Arabic connotations: to be strong, stout, firm, hard to be solid, robust to be steadfast, certain, sure to possess any quality in a strong degree the hard outer or apparent part of something elevated and hard ground
Indeed, it is Allah who is the [continual] Provider, the firm possessor of strength. (Quran 51:58)
The thunder glorifies His praises, as do the angels in awe of Him. He sends thunderbolts, striking with them whoever He wills. Yet they dispute about Allah. And He is tremendous in might. (Quran 13:13)
But you will never find in the way of Allah any change, and you will never find in the way of Allah any alteration. (Quran 35:43)