The Lord is speaking and being that He is God, He’s aware there are no others gods around. I can trust His perspective.
Being that He is God, He has also referred to HImself as my Savior. This means that I should not only worship Him because of Who He is as God and God alone but because of what He has done on my behalf: saved me. There is no one else to look to for salvation or saving.
He is not only The Provider but the Provision. He is my all in all.