The Lord is a God of War.

Fantasy movies cannot adequately portray the armory of weapons that could be available to you.

            Exodus 15:3
               The LORD is a man of war: the LORD is his name.

Christians may use physical weapons (swords, guns, knives, social media, etc.)

If the time is right:
Luke 22:36
   …he that hath no sword, let him sell his garment, and buy one.

But Christians have much more available to them than the physical weapons.
2 Corinthians 10:3-4
   For though we walk in the flesh, we do not war after the flesh:
   (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)

The following is not a comprehensive Biblical list of the offensive weapons available to proper Christians, but it gives you an idea of what is possible.

Moving of the earth:
Mark 11:23
   For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith.

Moses opened the earth so to swallow up his enemies:
Numbers 16:30-33
   But if the LORD make a new thing, and the earth open her mouth, and swallow them up, with all that appertain unto them, and they go down quick into the pit; then ye shall understand that these men have provoked the LORD.
   And it came to pass, as he had made an end of speaking all these words, that the ground clave asunder that was under them:
   And the earth opened her mouth, and swallowed them up, and their houses, and all the men that appertained unto Korah, and all their goods.
   They, and all that appertained to them, went down alive into the pit, and the earth closed upon them: and they perished from among the congregation.

Shaking the earth:
Acts 16:25-26
   And at midnight Paul and Silas prayed, and sang praises unto God: and the prisoners heard them.
    And suddenly there was a great earthquake, so that the foundations of the prison were shaken: and immediately all the doors were opened, and every one's bands were loosed.

Commanding destroying angels:

Matthew 26:53
   Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?

John 14:12-14
   Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
   And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son.
   If ye shall ask any thing in my name, I will do it.

2 Samuel 24:17
   …when he saw the angel that smote the people…

Matthew 18:18
   Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven.      

Revelation 9:15
   And the four angels were loosed, which were prepared for an hour, and a day, and a month, and a year, for to slay the third part of men.

Binding the strong man and spoiling (taking) his goods:
Mark 3:27
   No man can enter into a strong man's house, and spoil his goods, except he will first bind the strong man; and then he will spoil his house.

Fire from heaven:
2 Kings 1:10
   And Elijah answered and said to the captain of fifty, If I be a man of God, then let fire come down from heaven, and consume thee and thy fifty. And there came down fire from heaven, and consumed him and his fifty.

Exodus 9:22-26
   And the LORD said unto Moses, Stretch forth thine hand toward heaven, that there may be hail in all the land of Egypt, upon man, and upon beast, and upon every herb of the field, throughout the land of Egypt.
   And Moses stretched forth his rod toward heaven: and the LORD sent thunder and hail, and the fire ran along upon the ground; and the LORD rained hail upon the land of Egypt.
   So there was hail, and fire mingled with the hail, very grievous, such as there was none like it in all the land of Egypt since it became a nation.
   And the hail smote throughout all the land of Egypt all that was in the field, both man and beast; and the hail smote every herb of the field, and brake every tree of the field.
   Only in the land of Goshen, where the children of Israel were, was there no hail.

Wreaking havoc:
2 Kings 2:23-24
   And he went up from thence unto Bethel: and as he was going up by the way, there came forth little children out of the city, and mocked him, and said unto him, Go up, thou bald head; go up, thou bald head.
   And he turned back, and looked on them, and cursed them in the name of the LORD.  And there came forth two she bears out of the wood, and tare forty and two children of them.

When Jeremiah spoke, the words had the same power and authority as when God spoke.
Jeremiah 1:9-10
   Then the LORD put forth his hand, and touched my mouth.  And the LORD said unto me, Behold, I have put my words in thy mouth.
   See, I have this day set thee over the nations and over the kingdoms, to root out, and to pull down, and to destroy, and to throw down, to build, and to plant.

The above really is just theory, just words on the screen, unless you apply it to real life.