The Hebrew word used in this promise reflects more than just physical freedom; eventually it denotes a spiritual freedom. The word גאל [ga’al] is the action of the closest relative who pays a ransom for the one in bondage.
Many people reject the concept of God as father because our earthly fathers are so imperfect. But God is perfect; He is a perfect father. As we saw yesterday, He hears the cries of His children and comes to their rescue.