Yes we should be aware of law keepers. All the God approved Old Testament patriarchs were law keepers. Yes, they broke the law at times, and suffered the consequence like King David for example.
Exodus 21:1 If a man shall steal an ox, or a sheep, and kill it, or sell it; he shall restore five oxen for an ox, and four sheep for a sheep.
2 Samuel 12:1-10
1 And the LORD sent Nathan unto David. And he came unto him, and said unto him, There were two men in one city; the one rich, and the other poor .
2 The rich man had exceeding many flocks and herds:
3 But the poor man had nothing, save one little ewe lamb, which he had bought and nourished up : and it grew up together with him, and with his children; it did eat of his own meat, and drank of his own cup, and lay in his bosom, and was unto him as a daughter.
4 And there came a traveller unto the rich man, and he spared to take of his own flock and of his own herd, to dress for the wayfaring man that was come unto him; but took the poor man's lamb, and dressed it for the man that was come to him.
5 And David's anger was greatly kindled against the man; and he said to Nathan, As the LORD liveth, the man that hath done this thing shall surely die:
6 And he shall restore the lamb fourfold, because he did this thing, and because he had no pity .
7 And Nathan said to David, Thou art the man. Thus saith the LORD God of Israel, I anointed thee king over Israel, and I delivered thee out of the hand of Saul;
8 And I gave thee thy master's house, and thy master's wives into thy bosom, and gave thee the house of Israel and of Judah; and if that had been too little, I would moreover have given unto thee such and such things.
9 Wherefore hast thou despised the commandment of the LORD, to do evil in his sight? thou hast killed Uriah the Hittite with the sword, and hast taken his wife to be thy wife, and hast slain him with the sword of the children of Ammon.
10 Now therefore the sword shall never depart from thine house; because thou hast despised me, and hast taken the wife of Uriah the Hittite to be thy wife.
Concerning the scribes and Pharisees, they were law breakers because they were of a carnal mind. That's why Jesus had a problem with them, but they were the ones that had a problem with Jesus first, always trying to trap our Lord with leading questions. Sound familiar?
Try to incorporate these scriptures into your heart and soul, and see if Paul's teachings agree with what I just said.
Romans 8:7 Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be .
Acts 24:14 14 But this I confess unto thee, that after the way which they call heresy, so worship I the God of my fathers, believing all things which are written in the law and in the prophets: