"“When she hath found it,” Christ said, “she calleth her friends and her neighbors together, saying, Rejoice with me; for I have found the piece which I had lost. Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth.” COL 193.2"
"And when she hath found it, she calleth her friends and her neighbours together, saying, Rejoice with me; for I have found the piece which I had lost."
EGW directly quotes Luke 15:9, making a clear and undeniable connection.
"This parable, like the preceding, sets forth the loss of something which with proper search may be recovered, and that with great joy. But the two parables represent different classes. The lost sheep knows that it is lost. It has left the shepherd and the flock, and it cannot recover itself. It represents those who realize that they are separated from God and who are in a cloud of perplexity, in humiliation, and sorely tempted. The lost coin represents those who are lost in trespasses and sins, but who have no sense of their condition. They are estranged from God, but they know it not. Their souls are in peril, but they are unconscious and unconcerned. In this parable Christ teaches that even those who are indifferent to the claims of God are the objects of His pitying love. They are to be sought for that they may be brought back to God. COL 193.3"
"What man of you, having an hundred sheep, if he lose one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it?"
EGW draws a parallel between the parable of the lost sheep (Luke 15:4) and the state of those who are aware of their separation from God. She uses the parable to illustrate the experience of those who recognize their lost condition and are actively seeking redemption.
"And you hath he quickened, who were dead in trespasses and sins;"
EGW's description of those represented by the lost coin as being "dead in trespasses and sins" and unaware of their condition aligns with the concept of spiritual death described in Ephesians 2:1. While not a direct quote, the thematic overlap is significant.