"The parable of the prodigal son and that of the lost piece of silver teach the same lesson. Every soul that is especially imperiled by falling into temptation causes pain to the heart of Christ and calls forth His tenderest sympathy and most earnest labor. Over one sinner that repenteth, His joy is greater than over the ninety and nine who need no repentance. 5T 604.1"
"I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance."
The EGW passage explicitly references the parable of the prodigal son and the lost piece of silver, both of which illustrate the joy in heaven over one sinner who repents, as stated in Luke 15:7. This is a clear and direct thematic parallel.
"These lessons are for our benefit. Christ has enjoined upon His disciples that they co-operate with Him in His work, that they love one another as He has loved them. The agony which He endured upon the cross testifies to the estimate He places upon the human soul. All who accept this great salvation pledge themselves to be co-workers with Him. None are to consider themselves special favorites of heaven and center their interest and attention upon self. All who have enlisted in the service of Christ are to work as He worked, and are to love those who are in ignorance and sin, even as He loved them. 5T 604.2"
"A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another."
The EGW passage directly references and expands upon the commandment to love one another as Christ loved us, as stated in John 13:34. The emphasis on co-operating with Christ and loving those in ignorance and sin further strengthens the connection.
But there has been among us as a people a lack of deep, earnest, soul-touching sympathy and love for the tempted and the erring. Many have manifested great coldness and sinful neglect, represented by Christ as passing by on the other side, keeping as far as possible from those who most need help. The newly converted soul often has fierce conflicts with established habits or with some special form of temptation, and, being overcome by some master passion or tendency, he is guilty of indiscretion or actual wrong. It is then that energy, tact, and wisdom are required of his brethren, that he may be restored to spiritual health. In such cases the instructions of God's word apply: “Brethren, if a man be overtaken in a fault, ye which are spiritual, restore such an one in a spirit of meekness; considering thyself, lest thou also be tempted.” “We then that are strong ought to bear the infirmities of the weak, and not to please ourselves.” But how little of the pitying tenderness of Christ is …
"And by chance there came down a certain priest that way: and when he saw him, he passed by on the other side."
EGW directly references the parable of the Good Samaritan and the priest passing by on the other side as an example of coldness and neglect, making it an explicit allusion.