Sforno on Deuteronomy 26:17/ספורנו על דברים כ״ו:י״ז

1In this respect, את ה' האמרת היום, when you accepted upon yourself to become a party to this sacred oath, which puts at risk every physical goodness on earth in the event that you desecrate this oath האמרת, by doing so you elevated the image of the Lord, Who, as a result, will be even more honoured in your eyes than before you entered into this reciprocal covenant with Him. You have thereby demonstrated that it is more important for you to do His will than to enjoy any of the transient pleasures of this life.

2להיות לך לאלוקים, that He will be the most exalted of all disembodied phenomena, powers; you are aware that all that occurs in your life is the result of His guiding fate and history, in your case, without resorting to deputies, agents, any intermediaries who carry out His commands. Seeing that this is so, it would be inconceivable that in your religious rites you were to turn, even only as an auxiliary, to any other phenomenon purporting to be His agent. You bow and humble yourself only before Him, directly.

3וללכת בדרכיו, to try and emulate His characteristics to the extent He has seen fit to reveal these to you.

4ולשמוע בקולו, as is fit for His servants.