Cross reference
Matthew 24:20
20 And say a prayer that your flight may not be in the winter, or on a Sabbath.
Exodus 16:29
29 See, because the Lord has given you the Sabbath, he gives you on the sixth day bread enough for two days; let every man keep where he is; let no man go out of his place on the seventh day.
Acts 1:12
12 Then they went back to Jerusalem from the mountain named Olivet, which is near Jerusalem, a Sabbath day's journey away.