[Four] = The Fourth Commandment: Remember the Sabbath and keep it holy.

[Seven] = Creation's Last day, the day of rest. The Seventh day when God, Jesus, the 'Word' rested from all His work He had done.

God sent Moses on two trips up to the summit of Mt. Sinai to produce a copy of the 'Ten Commandments' that could be placed into the Ark of the Covenant.

1st time: Exodus 24:12 God writes the Ten Commandments on stone tablets. However, by the time Moses comes back down to the people with the Tablets in hand, they have already built a golden Calf Idol and Moses in righteous anger breaks the tablets upon seeing their Idolatry.  

2nd time: Exodus 34:27-28 God has him chisel out another set of tablets and carry them back up the Mountain to have God re-write them again for placement in the Ark of the Covenant.