"You positively neglect to do the will of God. Says Christ: “Ye are My friends, if ye do whatsoever I command you.” This is the condition imposed; this is the test that proves men's characters. Feelings are often deceiving, emotions are no sure safeguard; for they are variable and subject to external circumstances. Many are deluded by relying on sensational impressions. The test is: What are you doing for Christ? What sacrifices are you making? What victories are you gaining? A selfish spirit overcome, a temptation to neglect duty resisted, passion subdued, and willing, cheerful obedience rendered to the will of Christ are far greater evidences that you are a child of God than spasmodic piety and emotional religion. 4T 188.1"
"Ye are my friends, if ye do whatsoever I command you."
EGW directly quotes John 15:14, using it as a condition and test of true friendship with Christ, emphasizing obedience to His commands. The surrounding text in EGW expands on the importance of actions and sacrifices over feelings and emotions.