Nobody in the NT taught this.
This is the covenant I will make with them
after that time, says the Lord.
I
will put my laws in their hearts,
and I will write them on their minds.’
17 Then he adds:
‘Their sins and lawless acts
I will remember no more.’
18 And where these have been forgiven, sacrifice for sin is no longer necessary. Heb10:15-18
Is the above your covenant? The law is written in the mind and placed on the heart, and as previously shown to you, because that is so, you can meet the requirements of the law without having the law(written law) Is that your covenant?
Sacrifices for sin were made for the sins of those
in covenant, this is n o longer necessary. Why not? Their sins and lawless deeds I will remember no more. Not possible under a covenant of righteousness of obeying the law:
For Christ did not enter a sanctuary made with human hands that was only a copy of the true one; he entered heaven itself, now to appear for us in God’s presence. 25
Nor did he enter heaven to offer himself again and again, the way the high priest enters the Most Holy Place every year with blood that is not his own. 26 Otherwise Christ would have had to suffer many times since the creation of the world. But he has appeared once for all at the culmination of the ages to do away with sin by the sacrifice of himself. Heb9:24-27
Is that your covenant?