On the Sabbath they rested according to the commandment.Luke's account is the only one which directly states this (I looked). It's a little snippet of a verse, but with big implications.
Jesus' followers had just witnessed his agonizing death. Some had run away, some had betrayed him, all had forgotten His warning to them that this very thing would happen. They were probably some combination of dazed, hurt, despairing, numb, angry, frightened, and lost. What should they do? What could they do? What was even going on?
Many of us know those feelings. While I have never had a day as bad as that, I have had days of numbness, despair, sadness, helplessness. I have had days of not knowing what to do, or where to turn, or how to fix anything. My nature is to want to solve my problem--what steps are there to take, what verses are there to memorize, what counsel is there to seek? And there are times when all of those solutions are valid. However, there are also times when we can do nothing.
"On the Sabbath they rested according to the commandment." Good Jews, the disciples and Jesus' other followers had little choice about what to do. The Sabbath was designed for rest. They couldn't go to the tomb and finish preparing the body. They couldn't run around and make a plan. They could only obey the commandment that they knew, to keep the Sabbath.
There are times when I need to just take a breath, stop trying to solve my problems, and obey the commands I am sure of: Love the Lord your God with all your mind and strength and heart. Love your neighbor as yourself. Seek God. Help the poor. Listen for the Lord's voice. That's all. There will be time enough the next day to go to the tomb. Observing the Sabbath forced Jesus' followers to wait (yes, the dreaded "w" word) until the next day to make a battle plan, to enact a strategy, to pick up the pieces. The Lord was using that day to complete His awesome work of resurrection and salvation. Once the women were released to the tomb on Easter morning, God's glory was ready to be revealed. Everything had changed!
God uses those days in between crucifixion (of desires, of hopes, of dreams) and resurrection to ready us to see His glory and resurrection power. We need only walk in faith and follow the Lord's commands.