Among the reasons God has provided us with the Sabbath, it as a time to sharpen our focus. Preparation is the key to getting the most out of the Sabbath.
We must not construe the term, "whatever our heart desires," as a pass to sin, but we should use every occasion to grow in thinking and acting like God.
In our hectic culture, we commit far too little time to God, depriving ourselves of the Holy Spirit and attenuating the faith required to draw close to God.
Hebrews is addressed to a people living at the end of an era, who were drifting away, had lost their devotion, and were no longer motivated by zeal.