What is the law of sin and death?
Gen 2:16-17 (KJV) 16 And the LORD God commanded the man, saying, Of every tree of the garden thou mayest freely eat: 17 But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
YHWH simply set before Adam life and death. He told Adam to choose life for him and his descendants after him so that his seed can dwell in the Garden of Eden with him. Adam’s choice will determine everyone else life after his because we are his seed. The Law of Sin is simply the Law that leads to death and it says if you sin (disobey YHWH) you will surely die. Basically sin leads to death and not life. Since we are Adam’s seed meaning we all came from Adam and Adam’s life is tied to our lives then when Adam choose to sin and die, he choose that for all of us coming after him on earth. YHWH set before Adam life or death, good and evil, blessing and curses and Adam choose death for himself and his seed, everyone who comes from his linage.
Deut 30:15 (KJV) 15 See, I have set before thee this day life and good, and death and evil;
YHWH has set before us the same thing he set before Adam and Eve life or death, good or evil.
Deut 30:19-20 (KJV) 19 I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life, that both thou and thy seed may live: 20 That thou mayest love the LORD thy God, and that thou mayest obey his voice, and that thou mayest cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the LORD sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.
YHWH now calls heaven and earth to record today that he has set before Adam and his descendant (his seed) life and death, blessing and cursing, good and evil. YHWH begs us to choose life so that we and our children can live in the land he has given to us and to our fathers who lived before us.
If we love YHWH with all of our heart, we will obey his voice and cleave unto him because he is our life. He is the one that extends our days on earth so we can live in the land he swore unto Adam and our fathers.