The reason for refraining from many activities on the Sabbath is not labor or energy, but the overall motivation. Certain works are perfect for the Sabbath.

Benign neglect of the Sabbath covenant can incrementally lead us into idolatry. We must treat this holy time as different from the other days of the week.

Jesus didn't break the Sabbath, but he did break extra-legal fanatical human custom applied to the Sabbath apart from God's Law.

Jesus teaches the difference between works that cause burdens (work that profanes the Sabbath) and works that relieve burdens. The Father and Son never stop working.

We must be on guard for the incremental nature of gray areas. Godly reasoning recognizes no gray areas; just because something is lawful does not mean it is good.