For Jews, there is no 'Old Testament' because what Christians call 'New Testament' is not a part of Jewish scriptures. The so-called 'Old Testament' is known to Jews as Written Torah (or Tanakh).
'Torah' (The Law) refers to the Five Books of Moses: Genesis, Exodus, Leviticus, Numbers and Deuteronomy.
The Second Book (of Exodus) - written by Moses during 1450-1410 B.C. - describes the events of Israel's deliverance from slavery in Egypt in chronological order, and also lists the Laws that God has given to Israelites to guide them in their relationship with Him.
Moses and the fleeing Israelites were trapped between the Pharaoh's advancing army and the Red Sea. Thanks to divine intervention, a mighty east wind blew all night - parting the waters to leave a passage of land with walls of water on both sides.
The Israelites made their escape through the parted passage, but when the Pharaoh's army tried to pursue them the wind died down and the walls of water came crashing down to drown the soldiers.
Here is a picture from the 1956 movie, The Ten Commandments, showing Charlton Heston as Moses with the two stone tablets and the parted Red Sea:
So, what are the 10 Commandments?
- I am the Lord thy God - Thou shalt have no other gods before me
- Thou shalt not make unto thee any graven image
- Thou shalt not take the name of the Lord thy God in vain
- Remember the sabbath day, to keep it holy
- Honour thy father and thy mother
- Thou shalt not kill
- Thou shalt not commit adultery
- Thou shalt not steal
- Thou shalt not bear false witness against thy neighbour
- Thou shalt not covet (thy neighbour's house/wife/servants/animals)