The Old Covenant of man’s works and sacrifices could never take away sins because it reminded God of the people’s sins who were at fault.
Romans 3 “20 Because by the works of the law, no flesh will be justified in his sight; for through the law comes the knowledge of sin.”
Hebrews 10 “3 But in those sacrifices there is a yearly reminder of sins. 4 For it is impossible that the blood of bulls and goats should take away sins.”
Hebrews 8 “7 For if that first covenant had been faultless, then no place would have been sought for a second. 8 For finding fault with them, he said…. that I will make a new covenant”For I will be merciful to their unrighteousness. I will remember their sins and lawless deeds no more.”
Therefore God made a New Covenant based NOT on our works
BUT ONLY on Christ’s perfect obedience, life, death and resurrection – to never judge the believer’s sins anymore.
Romans 3 “21 But now apart from the law, a righteousness of God has been revealed, being testified by the law and the prophets; 22 even the righteousness of God through faith in Jesus Christ to all and on all those who believe. For there is no distinction, 23 for all have sinned, and fall short of the glory of God; 24 being justified freely by his grace through the redemption that is in Christ Jesus; 25 whom God sent to be an atoning sacrifice, through faith in his blood,”
The New Covenant of Christ’s blood alone saves us and not our works!
Hebrews 10 “10 by which will we have been sanctified through the offering of the body of Jesus Christ once for all…..“I will remember their sins and their iniquities no more. 18 Now where remission of these is, there is no more offering for sin.“
We are not righteous based on our FAULTY obedience, confession, repentance, goodness, sacrifice, tithing, church attendance, bible reading, prayer, fasting, witnessing, helping others, etc…We are righteous and forgiven all sin based on the PERFECT blood of Jesus Christ alone. This is the NEW COVENANT.