If anyone tries to harm them, fire comes from their mouths and devours their enemies. This is how anyone who wants to harm them must die.
NIV
And if anyone attempts to injure them, fire pours from their mouth and consumes their enemies; if anyone should attempt to harm them, thus he is doomed to be slain. [II Kings 1:10; Jer. 5:14.]AMP
And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed.
KJV
I have spoken to you with great frankness; I take great pride in you. I am greatly encouraged; in all our troubles my joy knows no bounds.
NIV
I have great boldness and free and fearless confidence and cheerful courage toward you; my pride in you is great. I am filled [brimful] with the comfort [of it]; with all our tribulation and in spite of it, [I am filled with comfort] I am overflowing with joy.
AMP
Great is my boldness of speech toward you, great is my glorying of you: I am filled with comfort, I am exceeding joyful in all our tribulation.
KJV
But if one loves God truly [with affectionate reverence, prompt obedience, and grateful recognition of His blessing], he is known by God [recognized as worthy of His intimacy and love, and he is owned by Him].
AMP
But if any man love God, the same is known of him.
KJV
"If people do not welcome you, shake the dust off your feet when you leave their town, as a testimony against them."
NIV
And wherever they do not receive and accept and welcome you, when you leave that town shake off [even] the dust from your feet, as a testimony against them.
AMP
And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
KJV