Hebrews 1:3 KJV — Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
It doesn’t say “the power of His word”.
Scripture says that Jesus upholds all things by the word of His power.
Before we talk about the word, we see that there is power.
The word has power because it is Jesus’ expression of His power.
Before God says a word, He is and He has power.