Celebrate a festival to the Lord for seven days.

Numbers 29:1-40
The first day of the seventh month hold a sacred assembly and do no regular work.
On the tenth day of this seventh month hold a sacred assembly. You must deny yourselves and do no work.
On the fifteenth day of seventh month, hold a sacred assembly and do no regular work. Celebrate a festival to the Lord for seven days.
In addition to what you vow and your free will offerings, offer these to the Lord at your appointed festival: your burnt offerings,grain offerings, drink offerings and fellowship offering.
Why?
For these days are celebrate a festival to the Lord, so it should be whole assembly with all your heart to join this special days.
No work in these a few days for rest and focus on the festival and offering to the Lord.
God like our heart with fear and zealous to worship the Lord.
How?
Honor the name of the Lord with all my heart, all my mind and all my strength.