Doesn't matter if you are saved our not, i think, satan has a way of getting to you, so we should ALWAYS be on the alert.
1 Peter 5:8
8 Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour.
Christ may have defeated satan, but that was not the final victory, that is yet too come. There's a lot of scripture about that...
Peter said what he said, who are we to say it was meant as a metaphore or a hyperbole or anything like that?
I for once take the Bible literally, and so should you.
Satan goes on the hunt for prey that he can sneak upon and grasp with his mouth. The tester.
It is human's ease of doubt, ease of deception which needs defeated.
God is so much more powerful than Lucifer.
Lucifer is just to test. He is the adversary to men.
He said to God, of Job, that Job would only stay on God's path given that he had all the things that God gave to him. And asked God if he could test Job to show that his faith was real, and not just for material possessions.
And Job passed the test.
Satan is like the person who will make sure that we stick unto God, who will test us to see how far we will go for God.
He did it to Jesus, asking if Jesus would turn the rocks to food. Saying that he would give him all the dominion of the earth if Jesus would bow down to him.
Yet Jesus refused and thus passed Satan's tests.
All through scripture, he is nothing more than a tester.
He tested Eve in the garden, to see whether she would stick to what God told her, whether she would go to God and say 'God, a serpent approached me' .... or whether she would take the decision herself to do something other than what God has asked of her.
Human's a programmed to do such things. Nobody is sinless in this.
And in a way, it is part of the plan that Satan is Satan. And that we are humans. And that we sin.
Because if it weren't, and if God had not allowed for Satan to be in the garden, he would not have been there.
I suspect that we need to be in FULL realisation of our sin to ever be able to turn from it in free will.
There is much difference between being 'wrapped in cotton wool' and not sinning, than being 'dropped in the deep end' and learning to swim.
We always have a lifeguard to pull us out, but it is better that we learn to swim and enjoy the water for what it is.
So to speak.
Anyway .. I went off on one.
My point is, some things are metaphorical. Some things are hyperbole. Some idioms. Some stories. Some depictions. And some literal.