Debby - we were composing posts at the same time. Yes, I'm sure the accuser looks for any opportunity to sneak in an attack when we are especially vulnerable. And, just as Jesus made good use of scripture when the devil tempted Him in the wilderness, the Word is our weapon of offense (sword of the Spirit), and the shield of faith our sure defense.
Those are good selections you posted. My first inclination is to stamp my foot and growl "Get thee behind me, Satan!" even though he isn't omnipresent and can only send one of his sinister underlings to try and attack.
One vivid memory of mine - in the room, just after my dad died, I sensed an invisible presence just behind my right shoulder, and it was a pair of them, not just one. I "heard" a rather lighthearted mocking voice whisper, "Well, you've lost him!" and, in my mind's eye I saw myself as if hanging onto my dad by his jacket over the edge of a dark cliff, trying to pull him back up, only to have him slip out of it, leaving me holding on to empty sleeves.
Even though I was startled by what I'd "heard," I was comforted to "hear" my own reply. "That just isn't so. Dad is safe in the arms of Jesus!" The defeated foe was instantly gone.
As followers of Jesus, I'm convinced that we already have one foot in the spiritual realm (seated with Christ in the heavenlies), and sometimes we're permitted glimpses of His glory, as well as a peek at the spiritual warfare going on behind the scenes. Thank God for giving us His Word and the Comforter present with us, so we know we are never alone, no matter what!