While it was impossible to not sin, ie Break a commandment and do my own thing, God also spelled out Blessings and Curses. If you chose to accept that the commandments were for our good, good instructions, for how we are to behave, good direction, the light upon our path, for how we are to be blessed and protected, OR we can find ourselves bucking against the LORD and His Son's instructions, refusing to believe that the whole Bible is applicable for our Christian walk today, and receive the curses.
The first use of the word "cursed" was in Genesis 3:14 and Satan was cursed.
Later we see God teaching His people the blessing and the curse.
Deu 11:26 Behold, I set before you this day a blessing and a curse;
Deu 11:27 A blessing, if ye obey the commandments of the LORD your God, which I command you this day:
Deu 11:28 And a curse, if ye will not obey the commandments of the LORD your God, but turn aside out of the way which I command you this day, to go after other gods, which ye have not known.
Deu_12:32 What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it.
Mal_3:6 For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.
And Jesus is the author of the Book of Revelations
Rev 22:18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
Rev 22:19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
Heb_13:8 Jesus Christ the same yesterday, and to day, and for ever
If the above were not true, then I have nothing to believe in the Bible. Any contradictions to these words above, surely I in my flesh am misunderstanding and it is me that needs changing, because The Bible is either all true or a half truth created by Satan. I choose that the Bible is all truth and any changes I create and proclaim that I should be cursed.
Jesus did not come to change the Word, for He is the Word from the beginning to the end. The Holy Spirit is our COMFORTER who leads us to GOD'S TRUTHS.
Joh_17:17 Sanctify them through thy truth: thy word is truth.
Psa 19:7 The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.
Psa 19:8 The statutes of the LORD are right, rejoicing the heart: the commandment of the LORD is pure, enlightening the eyes.
Psa 19:9 The fear of the LORD is clean, enduring for ever: the judgments of the LORD are true and righteous altogether.
Psa 19:10 More to be desired are they than gold, yea, than much fine gold: sweeter also than honey and the honeycomb.
Psa 19:11 Moreover by them is thy servant warned: and in keeping of them there is great reward.