"For nearly a thousand years Adam lived among men, a witness to the results of sin. Faithfully he sought to stem the tide of evil. He had been commanded to instruct his posterity in the way of the Lord; and he carefully treasured what God had revealed to him, and repeated it to succeeding generations. To his children and children's children, to the ninth generation, he described man's holy and happy estate in Paradise, and repeated the history of his fall, telling them of the sufferings by which God had taught him the necessity of strict adherence to His law, and explaining to them the merciful provisions for their salvation. Yet there were but few who gave heed to his words. Often he was met with bitter reproaches for the sin that had brought such woe upon his posterity. PP 82.1"
"And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou liest down, and when thou risest up."
Deuteronomy 6:7 commands parents to teach their children God's ways. The EGW passage describes Adam doing exactly that, teaching his descendants about God's law and the consequences of disobedience. This is more than a thematic parallel; it's a direct application of the principle outlined in Deuteronomy.
"Adam's life was one of sorrow, humility, and contrition. When he left Eden, the thought that he must die thrilled him with horror. He was first made acquainted with the reality of death in the human family when Cain, his first-born son, became the murderer of his brother. Filled with the keenest remorse for his own sin, and doubly bereaved in the death of Abel and the rejection of Cain, Adam was bowed down with anguish. He witnessed the wide-spreading corruption that was finally to cause the destruction of the world by a flood; and though the sentence of death pronounced upon him by his Maker had at first appeared terrible, yet after beholding for nearly a thousand years the results of sin, he felt that it was merciful in God to bring to an end a life of suffering and sorrow. PP 82.2"
"And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him."
The EGW passage directly references the event of Cain slaying Abel and connects it to Adam's sorrow and remorse. This is a clear thematic parallel, as the EGW passage elaborates on the emotional impact of the event described in Genesis 4:8.