We're actually still obligated to obey the law, the ten commandments as stated by Jesus in Matt 19 and outlined by Paul in Room 13:10. The obligation for man to be righteous does not disappear with the New Covenant, much as some seem to prefer that it does-not saying anyone specifically here. Anyway this is why Rom 2:13 tells us that we'll still be judged by the law, even though it cannot possibly justify us; only God can do that. So it's to be fulfilled but finally fulfilled the right way now, by the Spirit, under grace as God indwells us, via the love that He has wrought in our hearts.
"
For as many as are of the works of the law are under the curse; for it is written, “
Cursed is everyone who does not continue in all things which are written in the book of the law, to do them.” Galatians 3:10
"Clearly
no one who relies on the law is justified before God, because "the righteous will live by faith." Galatians 3:11
"So the law was put in charge to lead us to Christ that we might be justified by faith. Now that faith has come,
we are no longer under the supervision of the law." Galatians 3:24-25
"But we know that the law is good if one uses it lawfully, knowing this: that
the law is not made for a righteous person, but for the lawless and insubordinate, for the ungodly and for sinners, for the unholy and profane, for murderers of fathers and murderers of mothers, for manslayers, for fornicators, for sodomites, for kidnappers, for liars, for perjurers, and if there is any other thing that is contrary to sound doctrine ... " 1 Timothy 1:8-10
"For
Christ is the end of the law for righteousness to everyone who believes." Romans 10:4
"The sting of death is sin, and
the strength of sin is the law." 1 Corinthians 15:56
"...having
wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross." Colossians 2:14
"who also made us sufficient as ministers of the
new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life. But if the
ministry of death, written and engraved on stones, was glorious, so that the children of Israel could not look steadily at the face of Moses because of the glory of his countenance, which glory was passing away, how will the
ministry of the Spirit not be more glorious?" 2 Corinthians 3:6-8
"For whoever shall keep the whole law, and yet stumble in one point,
he is guilty of all." James 2:10
"In that He says, “A new covenant,”
He has made the first obsolete. Now what is becoming obsolete and
growing old is ready to vanish away." Hebrews 8:13
"Therefore, my brethren, you also
have become dead to the law through the body of Christ, that you may be married to another—to Him who was raised from the dead, that we should bear fruit to God." Romans 7:4
"But now
we have been delivered from the law, having died to what we were held by, so that we should serve in the newness of the Spirit and
not in the oldness of the letter." Romans 7:6
"And
the commandment, which was to bring life,
I found to bring death." Romans 7:10