What is the meaning of Luke 10:19?

Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you. (Luke 10:19 KJV)

Behold, I have given you authority to tread upon serpents and scorpions, and over all the power of the enemy: and nothing shall in any wise hurt you. (Luke 10:19 ASV)

Behold, I give you the power of treading upon serpents and scorpions and over all the power of the enemy, and nothing shall in anywise injure you. (Luke 10:19 DBY)

lo, I give to you the authority to tread upon serpents and scorpions, and on all the power of the enemy, and nothing by any means shall hurt you; (Luke 10:19 YLT)

Behold, I give you authority to tread on serpents and scorpions, and over all the power of the enemy. Nothing will in any way hurt you. (Luke 10:19 WEB)

Interlinear

Behold, <idou> I give <didomi> unto you <humin> power <exousia> to tread <pateo> on <epano> serpents <ophis> and <kai> scorpions, <skorpios> and <kai> over <epi> all <pas> the power <dunamis> of the enemy: <echthros> and <kai> nothing <oudeis> shall <adikeo> by any means <ou me> hurt <adikeo> <adikeo> you. <humas> (Luke 10:19 KJV)

Albert Barnes’ Commentary

Verse 19.  To tread on serpents. Preservation from danger. If you tread on a poisonous reptile that would otherwise injure you, I will keep you from danger. If you go among bitter and malignant enemies that would seek your life, I will preserve you. See Barnes for Mr 16:18.

Scorpions. The scorpion is an animal with eight feet, eight eyes, and a long jointed tail, ending in a pointed weapon or sting. It is found in tropical climates, and seldom exceeds 4 inches in length. Its sting is extremely poisonous, and it is sometimes fatal to life. It is in Scripture the emblem of malicious and crafty men. When rolled up it has some resemblance to an egg, Lu 12:12; Eze 2:6. The annexed cut will give an idea of its usual form and appearance.

The enemy. Satan. The meaning of this verse is, that Jesus would preserve them from the power of Satan and all his emissaries–from all wicked and crafty men; and this shows that he had divine power. He that can control Satan and his hosts–that can be present to guard from all their machinations, see all their plans, and destroy all their designs, must be clothed with no less than almighty power.

{v} “tread on serpents” Mr 16:18; Ac 28:5