Hebrews 13:8-9
8 Jesus Christ is the same yesterday and today and forever.
9 Do not be carried away by all kinds of strange teachings. It is good for our hearts to be strengthened by grace, not by ceremonial foods, which are of no value to those who eat them. NIV
Hebrews 8:8-12
8 But God found fault with the people and said:
“The time is coming, declares the Lord, when I will make a new covenant with the house of Israel and with the house of Judah.
9 It will not be like the covenant I made with their forefathers when I took them by the hand to lead them out of Egypt, because they did not remain faithful to my covenant, and I turned away from them, declares the Lord.
10 This is the covenant I will make with the house of Israel after that time, declares the Lord.
I will put my laws in their minds and write them on their hearts.
I will be their God, and they will be my people.
11 No longer will a man teach his neighbor, or a man his brother, saying, ‘Know the Lord,’ because they will all know me, from the least of them to the greatest.
12 For I will forgive their wickedness and will remember their sins no more.” NIV
Romans 4:4-5
4 Now when a man works, his wages are not credited to him as a gift, but as an obligation. 5 However, to the man who does not work but trusts God who justifies the wicked, his faith is credited as righteousness. NIV
Romans 3:23-25
23 for all have sinned and fall short of the glory of God, 24 and are justified freely by his grace through the redemption that came by Christ Jesus. 25 God 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— NIV