During the 1973 war, the Israeli army also occupied the west bank of the Suez Canal. Should Egypt abrogate the peace treaty, as now seems likely, not only the Sinai but the west bank of the Suez Canal would be subject to forfeit if Israel can reconquer it.
I don't think Israel would ever give up all of the Golan due to primarily a tactical disadvantage of losing the high ground. The Golan is also a valuable source of water and farm land. For Israel to give it up, it would require an extraordinarily advantageous peace treaty.
The West Bank gets its name from being on the west bank of the Jordan river (I believe) and borders Jeruselum on three sides. If Israel gives up Jerusalem, God isn't going to be happy.
The Sinai borders the Suez in its entirety. Israel returned the Sinai Peninsula to Egypt, after capturing it in 1973, as incentive for Egypt to agree to the terms of the 1979 Camp David Peace Accords.
Egyptian president Anwar Sadat at the time, was later assassinated (some say) by the Muslim Brotherhood. Mubarak then became the leader of Egypt until his recent ouster.