"gifts will be the most needed, and in what way they can have the most success in reaching the heart. Then as they separate again their courage and energy will be renewed to meet the opposition and darkness and to labor with feeling hearts to save perishing souls. EW 103.1"
"Now there are diversities of gifts, but the same Spirit. And there are differences of administrations, but the same Lord. And there are diversities of operations, but it is the same God which worketh all in all. But the manifestation of the Spirit is given to every man to profit withal. For to one is given by the Spirit the word of wisdom; to another the word of knowledge by the same Spirit; To another faith by the same Spirit; to another the gifts of healing by the same Spirit; To another the working of miracles; to another prophecy; to another discerning of spirits; to another divers kinds of tongues; to another the interpretation of tongues: But all these worketh that one and the selfsame Spirit, dividing to every man severally as he will."
The EGW passage speaks of gifts needed to reach the heart, which aligns with the concept of spiritual gifts distributed by the Spirit as described in 1 Corinthians 12. The connection is thematic rather than a direct quote or allusion.
"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."
The EGW passage mentions 'opposition and darkness' which is a clear thematic parallel to Ephesians 6:12's description of wrestling against 'the rulers of the darkness of this world.'