The part in bold is just not true:
Genesis24: 4"(A)I will multiply your descendants as the stars of heaven, and will give your descendants all these lands; and (B)by your descendants all the nations of the earth shall be blessed; 5because Abraham obeyed Me and kept My charge, My commandments, My statutes and My laws."
Josh22: 1(A)Then Joshua summoned the Reubenites and the Gadites and the half-tribe of Manasseh, 2and said to them, "You have kept all that Moses the servant of the LORD commanded you, (B)and have listened to my voice in all that I commanded you. 3"You have not forsaken your brothers these many days to this day, but have kept the charge of the commandment of the LORD your God.
David said: 2 Sam22 22"For I have kept the ways of the LORD, And have not acted wickedly against my God. 23"For all His ordinances were before me, And as for His statutes, I did not depart from them.
1 King 14:...(C)yet you have not been like My servant David, who kept My commandments and who followed Me with all his heart, (D)to do only that which was right in My sight;
Genesis6: 8But (A)Noah (B)found favor in the eyes of the LORD. 9These are the records of the generations of Noah. Noah was a (C)righteous man, (D)blameless in his time; Noah (E)walked with God.
Psalm 15: 1O LORD, who may abide (A)in Your tent? Who may dwell on Your (B)holy hill? 2He who (C)walks with integrity, and works righteousness, And (D)speaks truth in his heart. 3He (E)does not slander with his tongue, Nor (F)does evil to his neighbor, Nor (G)takes up a reproach against his friend;
Solomon: Proverbs 11: 3The (A)integrity of the upright will guide them, But the (B)crookedness of the treacherous will destroy them. 4(C)Riches do not profit in the day of wrath, But (D)righteousness delivers from death. 5The (E)righteousness of the blameless will smooth his way, But (F)the wicked will fall by his own wickedness.
2 King 18 5(G)He trusted in the LORD, the God of Israel; (H)so that after him there was none like him among all the kings of Judah, nor among those who were before him. 6For he (I)clung to the LORD; he did not depart from following Him, but kept His commandments, which the LORD had commanded Moses.
i kings 3Then Solomon said, "You have shown great lovingkindness to Your servant David my father, according as he walked before You in truth and righteousness and uprightness of heart toward You; and You have reserved for him this great lovingkindness, that You have given him a son to sit on his throne, as it is this day.
Caleb:Josh14: 9"So Moses swore on that day, saying, 'Surely (J)the land on which your foot has trodden will be an inheritance to you and to your children forever, because you have followed the LORD my God fully.'
Deut 3011For this commandment which I command thee this day, it is not hidden from thee, neither is it far off. 12It is not in heaven, that thou shouldest say, Who shall go up for us to heaven, and bring it unto us, that we may hear it, and do it? 13Neither is it beyond the sea, that thou shouldest say, Who shall go over the sea for us, and bring it unto us, that we may hear it, and do it? 14But the word is very nigh unto thee, in thy mouth, and in thy heart, that you may do it. 16In that I command thee this day to love the LORD thy God, to walk in his ways, and to keep his commandments and his statutes and his judgments, that thou mayest live and multiply:
So people have kept the commandments, not perfectly but G-d knew that we would be imperfect. Abraham kept the law, David, Hezekiah, etc...They are mentioned as righteous too. David mentions people being righteous a lot. We have always been justified by G-ds grace even before the law and after the law was given by the means of atonement G-d provided. Prayer, repentance, charity, fasting and for unintentional sins, sacrifices. G-d gave us the commandments (Deut 30 above) that "you may do it". He isnt going to give us something we cant do! There is not one scripture in the Tanakh (OT) that says the law will be replaced with a new law. New covenant does NOT mean new law and the new covenant has not arrived yet. This sermon is all wrong.
***So people have kept the commandments, not perfectly but G-d knew that we would be imperfect.***
Oh, so a little sin is OK?
Romans 3: 9What shall we conclude then? Are we any better? Not at all! We have already made the charge that Jews and Gentiles alike are all under sin. 10As it is written:
“There is no one righteous, not even one;
11there is no one who understands,
no one who seeks God.
12All have turned away,
they have together become worthless;
there is no one who does good,
not even one.”
13“Their throats are open graves;
their tongues practice deceit.”
“The poison of vipers is on their lips.”
14“Their mouths are full of cursing and bitterness.”
15“Their feet are swift to shed blood;
16ruin and misery mark their ways,
17and the way of peace they do not know.”
18“There is no fear of God before their eyes.”
Now, how did all of these OT sinner find righteousness in God’s eyes?
Hebrews 11 teaches it is all by faith:
4By faith Abel offered God a better sacrifice than Cain did. By faith he was commended as a righteous man, when God spoke well of his offerings. And by faith he still speaks, even though he is dead.
5By faith Enoch was taken from this life, so that he did not experience death; he could not be found, because God had taken him away. For before he was taken, he was commended as one who pleased God. 6And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.
7By faith Noah, when warned about things not yet seen, in holy fear built an ark to save his family. By his faith he condemned the world and became heir of the righteousness that comes by faith.
8By faith Abraham, when called to go to a place he would later receive as his inheritance, obeyed and went, even though he did not know where he was going. 9By faith he made his home in the promised land like a stranger in a foreign country; he lived in tents, as did Isaac and Jacob, who were heirs with him of the same promise. 10For he was looking forward to the city with foundations, whose architect and builder is God.
11By faith Abraham, even though he was past age—and Sarah herself was barren—was enabled to become a father because hea considered him faithful who had made the promise. 12And so from this one man, and he as good as dead, came descendants as numerous as the stars in the sky and as countless as the sand on the seashore.
13All these people were still living by faith when they died. They did not receive the things promised; they only saw them and welcomed them from a distance. And they admitted that they were aliens and strangers on earth. 14People who say such things show that they are looking for a country of their own. 15If they had been thinking of the country they had left, they would have had opportunity to return. 16Instead, they were longing for a better country—a heavenly one. Therefore God is not ashamed to be called their God, for he has prepared a city for them.
17By faith Abraham, when God tested him, offered Isaac as a sacrifice. He who had received the promises was about to sacrifice his one and only son, 18even though God had said to him, “It is through Isaac that your offspring will be reckoned.”c 19Abraham reasoned that God could raise the dead, and figuratively speaking, he did receive Isaac back from death.
20By faith Isaac blessed Jacob and Esau in regard to their future.
21By faith Jacob, when he was dying, blessed each of Joseph’s sons, and worshiped as he leaned on the top of his staff.
22By faith Joseph, when his end was near, spoke about the exodus of the Israelites from Egypt and gave instructions about his bones.
23By faith Moses’ parents hid him for three months after he was born, because they saw he was no ordinary child, and they were not afraid of the king’s edict.
24By faith Moses, when he had grown up, refused to be known as the son of Pharaoh’s daughter. 25He chose to be mistreated along with the people of God rather than to enjoy the pleasures of sin for a short time. 26He regarded disgrace for the sake of Christ as of greater value than the treasures of Egypt, because he was looking ahead to his reward. 27By faith he left Egypt, not fearing the king’s anger; he persevered because he saw him who is invisible. 28By faith he kept the Passover and the sprinkling of blood, so that the destroyer of the firstborn would not touch the firstborn of Israel.
29By faith the people passed through the Red Sea as on dry land; but when the Egyptians tried to do so, they were drowned.
30By faith the walls of Jericho fell, after the people had marched around them for seven days.
31By faith the prostitute Rahab, because she welcomed the spies, was not killed with those who were disobedient.e
32And what more shall I say? I do not have time to tell about Gideon, Barak, Samson, Jephthah, David, Samuel and the prophets, 33who through faith conquered kingdoms, administered justice, and gained what was promised; who shut the mouths of lions,