Here are some scriptures that may help.
"For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind. - 2 Timothy 1:7"
"Put on the full armor of God so that you can take your stand against the devil's schemes." - Ephesians 6:11
"I have given you authority to trample on snakes and scorpions and to overcome all the power of the enemy; nothing will harm you. - Luke 10:19"
Psalm 91
11 For he will command his angels concerning you
to guard you in all your ways;
12 they will lift you up in their hands,
so that you will not strike your foot against a stone.
13 You will tread upon the lion and the cobra;
you will trample the great lion and the serpent.
14 “Because he loves me,” says the Lord, “I will rescue him;
I will protect him, for he acknowledges my name.
15 He will call upon me, and I will answer him;
I will be with him in trouble,
I will deliver him and honor him.
16 With long life will I satisfy him
and show him my salvation.”
"You, dear children, are from God and have overcome them, because the one who is in you is greater than the one who is in the world." 1 John 4:4
I give them eternal life, and they shall never perish; no one can snatch them out of my hand. John 10:28
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God promises these things to those who believe in Jesus Christ, this is a promise, and he is not a man that he should lie.
Nothing can separate you from the Love of God. He will uphold you in his righteous right hand.
Keep your eyes on Jesus Christ, I've dealt with things like that in the spirit too, I've even had tormenting dreams where I had many snake bites in my chest, assuring my death, I've even felt fire burning me and this was just last year.. but I was not destroyed and overcome because - Greater is he that is in me than he that is in the world" Its because of Jesus Christ who lives in me, I kept my eyes on him the entire time which was hard for me...because I didn't have people tell me how to do this, I had to learn it all on my own...
But it was love of God that saved me, and my faith and trust in Jesus.
I've also over came many of those things by the word of God and the blood of Jesus Christ, and you can too!
don't listen to the lies of the devil when you hear things like "spiritual death" Nothing can separate you from the Love of God.
God promises this word that he will hold you forever. As long as you keep your focus on Jesus Christ and what the word says he will keep you forever.
May the peace that passes understanding restore your mind and heart and body. The Lord will never let you go.