What does it mean to have faith like Abraham?

To have faith like Abraham is to believe in the promises of God fulfilled in Christ. Romans 4 illustrates that Abraham was justified not by his works but by his faith in God's promise. His faith was characterized by reliance on God's ability to perform what He had promised. Just as Abraham's faith looked forward to the coming of the Messiah, our faith looks back to the finished work of Christ. This means our assurance of salvation is not based on our faithfulness but the faithfulness of God. As it was imputed to Abraham for righteousness, so too is it for all who believe in Christ.