"While planning for the journey, a voice seemed to say to me: “Put the armor on. I have work for you to do in Battle Creek.” The voice seemed so plain that I involuntarily turned to see who was speaking. I saw no one; and at the sense of the presence of God my heart was broken in tenderness before Him. When my husband entered the room, I told him the exercises of my mind. We wept and prayed together. Our arrangements had been made to leave in three days; but now all our plans were changed. LS 219.2"
"Put on the whole armour of God, that ye may be able to stand against the wiles of the devil."
EGW's statement 'Put the armor on' is a clear allusion to Ephesians 6:11, which speaks of putting on the whole armor of God.