23. Nothing is more common in the Word than for the word 'day' to be used to mean the particular time at which events take place, as in Isaiah,

The day of Jehovah is near. Behold, the day of Jehovah comes. I will make heaven tremble, and the earth will be shaken out of its place, on the day of My fierce anger. Its time is close at hand, and its days will not be prolonged. Isaiah 13:6, 9, 13, 22.

And in the same prophet,

Her antiquity is in the days of antiquity. On that day Tyre will be forgotten for seventy years, like the days of one king. Isaiah 23:7, 15.

Since 'day' stands for the particular time it also stands for the state associated with that particular time, as in Jeremiah, Woe to us, for the day has declined, for the shadows of evening have lengthened! Jeremiah 6:4

And in the same prophet,

If you break My covenant that is for the day and My covenant that is for the night, so that there is neither daytime nor night at their appointed time. Jeremiah 33:20, 25.

Also,

Renew our days as of old. Lamentations 5:21.

To command is to give an order that something must be done, and is directed to an individual, or a group. It is an imperative, not a suggestion. Commanding can be done in two ways, or from two differing motives. It often comes in an organization, where it is used to impose an order that is necessary to do the organization's work, such as a business, or government or an army, and can be legitimate, or is used in a family by parents to maintain an orderly home. But it can also be used by a person who loves power and having gotten it in some way, loves to impose his or her will on others for selfish gratification. So one motive is love of a use, or of good, and the other is for the love of self, or possessions. The Lord, from His infinite love, has given mankind commandments because He is order itself, and knows that our happiness to eternity depends on our acceptance of His order of creation, which ultimately is the only order that exists.