The overarching message of the Bible is the story of God’s redemption of all His creation. The miracles recorded in the Bible were for the primary purpose of accomplishing that redemption AND making it clear who God is (His nature and His glory) to all people of every generation. For us today, when we think of God as a Savior, we point to the cross and to Jesus as our Savior and Lord. When we celebrate communion each week, we’re reminded of what Jesus did on the cross that permanently defines God’s saviorhood for all time. However, if you were to ask an Israelite in the OT how he knew God is a Savior and Redeemer, they would point to the Exodus where God delivered His people from Egyptian slavery.