Genesis 15:1-6
God's Covenant With Abram
1 After this, the word of the LORD came to Abram in a vision: "Do not be afraid, Abram. I am your shield, your very great reward."
2 But Abram said, "O Sovereign LORD, what can you give me since I remain childless and the one who will inherit my estate is Eliezer of Damascus?" 3 And Abram said, "You have given me no children; so a servant in my household will be my heir."
4 Then the word of the LORD came to him: "This man will not be your heir, but a son coming from your own body will be your heir." 5 He took him outside and said, "Look up at the heavens and count the stars—if indeed you can count them." Then he said to him, "So shall your offspring be."
6 Abram believed the LORD, and he credited it to him as righteousness.
Romans 4:16-25
16Therefore, the promise comes by faith, so that it may be by grace and may be guaranteed to all Abraham's offspring—not only to those who are of the law but also to those who are of the faith of Abraham. He is the father of us all. 17As it is written: "I have made you a father of many nations." He is our father in the sight of God, in whom he believed—the God who gives life to the dead and calls things that are not as though they were.
18Against all hope, Abraham in hope believed and so became the father of many nations, just as it had been said to him, "So shall your offspring be." 19Without weakening in his faith, he faced the fact that his body was as good as dead—since he was about a hundred years old—and that Sarah's womb was also dead. 20Yet he did not waver through unbelief regarding the promise of God, but was strengthened in his faith and gave glory to God, 21being fully persuaded that God had power to do what he had promised. 22This is why "it was credited to him as righteousness." 23The words "it was credited to him" were written not for him alone, 24but also for us, to whom God will credit righteousness—for us who believe in him who raised Jesus our Lord from the dead. 25He was delivered over to death for our sins and was raised to life for our justification.
Definition of Righteousness in "Quest Study Bible"
Righteousness - The fulfillment of the demands of a relationship. God brings believers into a right relation with him, erasing their guilt and crediting righteousness to them (Romans 3:21-22), helping them to be devoted to the service of what God says is right (Romans 6:11-13).
Romans 3:21-22
Righteousness Through Faith
21But now a righteousness from God, apart from law, has been made known, to which the Law and the Prophets testify. 22This righteousness from God comes through faith in Jesus Christ to all who believe. There is no difference, 23for all have sinned and fall short of the glory of God, 24and are justified freely by his grace through the redemption that came by Christ Jesus. 25God presented him as a sacrifice of atonement, through faith in his blood. He did this to demonstrate his justice, because in his forbearance he had left the sins committed beforehand unpunished—
Romans 6:11-13
11In the same way, count yourselves dead to sin but alive to God in Christ Jesus. 12Therefore do not let sin reign in your mortal body so that you obey its evil desires. 13Do not offer the parts of your body to sin, as instruments of wickedness, but rather offer yourselves to God, as those who have been brought from death to life; and offer the parts of your body to him as instruments of righteousness.
**Note: when you see a "therefore" look and see what is there for.
