Galatians 3:13-14 says "Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: 'Cursed is everyone who is hung on a tree.' He redeemed us in order that the blessing given to Abraham might come to the Gentiles through Christ Jesus, so that by faith we might receive the promise of the Holy Spirit."
On two occasions in these verses, we see Paul use the word 'redeemed'. The word redeemed can mean a few different things. For example, it may mean to 'buy up', or to 'purchase', or to 'ransom'. The picture that is being painted for the reader of the letter is of someone who purchases a slave in order to give them their freedom. And the Word of God is very clear! If you are not born again, then you are a slave to sin. However Jesus, through His death and resurrection, has paid the price to redeem you and set you free!
John 3:16, that well known verse says "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life."
The Bible is very clear that there are severe consequences involved when you reject salvation through Jesus. In the Scriptures, we are told of a place of never ending torment and eternal separation for those who die lost in their sins. However, the great news is, God loves us so much that he made a provision for us to escape... we can be saved and delivered from this.
As it says in this well known verse in John 3:16, the provision that was made was God's own Son, Jesus. God loved the world so much, that he gave his Son Jesus to die our death, to take our sins upon himself. And anyone that believes, who has faith in Jesus, will never die but have everlasting life! If you turn to Jesus in faith, you are justified!
And this takes us back to the heart of what Paul was trying to get the Galatian believers to comprehend. They had turned to Jesus by faith, and they needed to be reminded that they were justified by faith.