"Others will prove a source of trial as they go to their homes. Yet this should not discourage any or hinder them in their efforts in this good work. Satan and his agents will do all they can to hinder, to perplex, and to bring burdens upon those who heartily engage in the work of advancing this reform. 1T 493.2"
"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places."
Both passages address spiritual warfare. The EGW passage speaks of Satan's agents hindering and perplexing, while Ephesians 6:12 describes wrestling against spiritual forces. The connection is valid.
"Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:"
Both passages discuss the devil's attempts to hinder believers. The EGW passage speaks of Satan's efforts to hinder those advancing reform, while 1 Peter 5:8 warns of the devil seeking to devour. The connection is strong enough to confirm.