That is an odd response since in never gave you "my interpretation" of the above verses. I simply questioned you. You don't read very carefully.
Let me draw you a timeline.
First, he sends them out in Luke 19, barefoot, without swords, but with the promise of divine protection against serpents and scorpions.
He rebukes Peter for using his sword on the way to Calvary for that would impede him from doing His Father's will and dying for the sins of the world.
In Luke 22 he told them all to take a sword, presumably for their own protection as they would be scattered and would have fare for themselves as they wander from place to place. Divine protection is not necessarily given here. They would fend for themselves using their swords for protection. Thus the contrast that Christ Himself gives to the previous time he sent them out in Luke 10.
In Mark 16 they would still go out with their swords and depend on the grace of God. But they would be given signs and wonders, as evidences that they were the apostles of Christ. They would have the power to pick up snakes without harm and drink any poisonous substance. This was protection from very antagonistic enemies of the gospel. The apostles especially made fierce enemies. All, but John, were martyred for their faith. If you read of the missionary journeys of Paul, you see how many times Paul faced death; how many times they tried by various means to kill him. He was even stoned and left for dead. He testified that "he fought with beasts" at Ephesus. God gave him grace. God delivered him from the onslaught of these enemies and sometimes miraculously so.
Serpents, poison, and all other types of enemies, Paul was protected from them all until it was time for him to leave this earth.
YOur interpretation of the serpents and poison is literal! Mine is not!
I see serpents as first mention in Genesis as satan!
I also see throughout the Bible that serpents and scorpions are speaking of evil. Even the snake on the pole represented our sin that CHrist took upon himself...sin is evil!
I posted other OT scriptures showing what serpents and scorpions represented...
Ezekiel 2:6 And thou, son of man, be not afraid of them, neither be afraid of
their words, though briers and thorns be with thee, and thou dost dwell among scorpions:
be not afraid of their words, nor be dismayed at their looks, though they be
a rebellious house.
Are these literal scorpions?
Psalm 58
2 Yea, in heart ye work wickedness; ye weigh the violence of your hands in the earth.
3 The wicked are estranged from the womb: they go astray as soon as they be born, speaking lies.
4
Their poison is like the poison of a serpent: they are like the deaf adder that stoppeth her ear;
Psalm 140
1 <Musician, A Psalm of David.] Deliver me, O LORD, from the evil man: preserve me from the violent man;
2 Which imagine mischiefs in their heart; continually are they gathered together for war.
3
They have sharpened their tongues like a serpent; adders' poison is under their lips. Selah.
4 Keep me, O LORD, from the hands of the wicked; preserve me from the violent man; who have purposed to overthrow my goings.
Serpents are never a good thing!
In Luke it puts the serpents and scorpions together with the "power of the enemy."
.."I
give unto you power to tread on serpents and scorpions,
and over all the power of the enemy.."
He goes on to say in the next verse that not to rejoice over the spirits being subject to them. In context of this verse it does not say anything about literal snakes it is speaking of evil/spirits!
So you can continue to believe what you have posted! But my conclusion is different concerning serpents!