If so, how is "seven days" to be understood? As referring to compensation (i.e., if he did not offer the chagigah on the first day, he can do so all seven days.
"For the L-rd your G-d will bless you": I might think, only in that species (which he sacrifices); it is, therefore, written "in all of your produce and in all to which you put your hand."
"and you shall be only happy": to include the night of the last day of the festival for rejoicing.
I might think also to include the night of the first day of the festival; it is, therefore, written "only" (to exclude this).