In Romans 4 & 5, Paul speaks of faith and what faith truly is and he uses the example of Abraham as he teaches about faith. Abraham was considered righteous and received justification from sin because of his faith in the Lord. He believed God. He believed God's Words were true. He lived his life out of his belief in God's promises. He received the Lord's righteousness through his faith in the Lord. He gave glory to God through His faith in God. He did what God asked of him, fully convinced that what God promised, He was able to bring forth. We are saved by faith trough the grace of God, through repenting from sin and believing God - at His Word. When we entrust our hearts and lives to Jesus, we receive His justification, His righteousness, and His redemption. It only comes through wholehearted faith in our risen Savior.