In Roman society, a youth coming of age laid aside the robe of childhood & put on a new toga. This represented his move into adult citizenship with full rights & responsibilities. Apostle Paul combines this understanding with baptism. By becoming Christians & being baptized, they were becoming spiritually grown up & ready to take on the privileges & responsibilities of the mature. You have laid aside the old clothes of the Law, & now you are putting on Christ's new robe of righteousness.
Jewish males greeted each new day by prayer, Lord, I thank you that I am not a Gentile, a slave, or a woman. The role of women was enhanced by Christianity. Faith in Christ transcends these differences & makes all believers one in Christ.
The original covenant with Abraham was intended for the whole world, not just for his descendants. All believers partake of this covenant & are blessed as children of Abraham.
The apostle Paul uses the illustration of slavery to show that before Christ came & died for sins, people were in bondage to the Law.
Thinking they could be saved by it, they became enslaved to trying - & failing - to keep it. The Good News is that we who were once slaves are now God's very own children with an intimate relationship with him. Because of Christ, there is no reason to be afraid of God. We can come boldly into his presence, knowing he will welcome us as his family members.
True Christianity: Christians are those who believe inwardly & outwardly that Jesus' death has allowed God to offer them forgiveness & eternal life as a gift. They have accepted that gift by faith & are seeking to live a life of obedient gratitude for what God has done for them.
Christianity is both private & public, heart-belief & mouth-confession. Our relationship to God & the power he provides result in obedience. Having received the gift of forgiveness & eternal life, we are now daily challenged to live that life with his help.
When the fulness of the time was come "God sent Jesus to earth to die for our sins. For centuries the Jews were wondering when their Messiah would come - but God's timing was perfect.
Jesus was born of a woman - he was human. He was born as a Jew - he was subject to God's Law & fulfilled it perfectly. Thus Jesus was the perfect sacrifice because, although he was fully human, he never sinned. His death bought freedom for us who were enslaved to sin so we could be adopted into God's family.
Under Roman law, an adopted child was guaranteed all legal rights to his father's property. "Abba" is an Aramaic word for father. It was used by Christ in prayer in Mark 14:36. As adopted children of God, we share with Jesus all rights to God's resources. As God's heirs, we can claim what he has provided for us - our full identity as his children.
Reference summary used from the Life Application Bible, Tyndale House Publishers, Inc., Wheaton, Illinois