Taking time to rest is not only a necessity, it is required of us. Resting from all of the works in life keeps one's soul grounded. It helps one to recuperate. Resting also helps one to avoid burnout, stress related illnesses, and the like. Taking a day to rest is ordained by God (Exodus 20:8).
We All Must Rest
God rested (Genesis 2:2). A day of rest time is a good time to focus on praising God for all that He has done. A time to consult Jesus about ways to help please and Glorify Him. In this time of rest God will teach us the righteous ways to help, give, LIVE, and SPEAK in Jesus name. Not resting doesn't give God the Glory due Him. Resting in the Word is beneficial for/to the soul. It is the only way to truly recuperate from the sufferings experienced in this world. Don't worry about what others are doing. 'Be still before the Lord; wait patiently for Him and entrust yourself to Him; Don't agitate yourself because of someone who prospers in his ungodly way, carrying out his own ungodly schemes (Psalm 37:7). God rested from His labors, so we could rest from ours.
Rest in the Word