In biblical times, God had his people put up altars built of rocks to remind them of His protection and provision for them during a particular time in their journey of life. Whenever they came upon those altars of rocks, they were to remind them of how they had gotten to that particular place and how God had blessed them in the past. In the Book of Joshua, we are told that when the Israelites crossed over the Jordan River into the promised land, the people built an altar to remind them of how God had stopped the flow of the river until every Israelite was safe on the other side. When all were safe, the river went immediately back to flood stage. A miracle that God had performed on their behalf was to be remembered as a blessing and that would give them hope that God would always be there to work another miracle in the future if they needed one.
Joshua 4:23-24 (NIV): "For the Lord your God did to the Jordan just what he had done to the Red Sea when he dried it up before us until we had crossed over. He did this so that all the peoples of the earth might know that the hand of the Lord is powerful and so that you might always fear the Lord your God."
What reminds you for what the Lord has done for you in the past? Do you have a method of recalling your blessings from God? A journal? Paragraphs written in your Bible? A treasure you have placed aside to remind you? An album of pictures? By remembering what God has done for us in the past helps us to stay on the right path with Him in confidence of His faithfulness and love toward us for the future.
What a precious gift God gave us in giving us our memories!