Young men have received the truth and run well for a season, but Satan has woven his meshes about them in unwise attachments and poor marriages. This he saw would be the most successful way he could allure them from the path of holiness. For a while some of these youth bore the gospel armor with dignity and grace. Just as long as the heart and mind were in subjection to the divine will, there was prosperity; but when the eye was diverted from Jesus and attracted to unworthy objects, then it was that self asserted the sway, that carnal reason overbore wise judgment and integrity, and the Christian armor was thought too weighty to be borne by those so young in years. It would do for old, experienced soldiers of the gospel, but it was too heavy for youth. The tempter offered many suggestions calculated to cause inconstancy and vacillation in the Christian course. 5T 114.3 The injunction of the Captain of their salvation was, “Take ye heed, watch and pray,” “lest ye enter into temptation;”…
"Ye did run well; who did hinder you that ye should not obey the truth?"
The EGW passage uses the phrase 'run well for a season' and discusses being hindered from the path of holiness, which is a clear allusion to Galatians 5:7, 'Ye did run well; who did hinder you that ye should not obey the truth?'