Before its a fiery fight. Man against man, kingdom against kingdom, descendants against descendants. Fight between life and death against flesh and blood. The winner will plunder everything including wife, sons & daughters and servants of the loser.
Those who are with the Lord are of great advantage so they are commanded to give to their brethren and to the Levites (the priest at that time) 10% of the loot including the income derived from it.
Josh 22:8 and spoke to them, saying, “Return with much riches to your tents, with very much livestock, with silver, with gold, with bronze, with iron, and with very much clothing. Divide the spoil of your enemies with your brethren.”
Even the Levites who received the 10% of the loot will give the 10% of the 10% to the lord.
Neh 10:38 And the priest, the descendant of Aaron, shall be with the Levites when the Levites receive tithes; and the Levites shall bring up a tenth of the tithes to the house of our God, to the rooms of the storehouse.
Now, is the 10% still applicable?
Heb 7:12 For the priesthood being changed, of necessity there is also a change of the law.
And this is the new law by our new priest Jesus Christ.
2 Cor 9:7 So let each one give as he purposes in his heart, not grudgingly or of necessity; for God loves a cheerful giver.
For there will be no priest that will again rise because Christ has an unchangeable priesthood.
Heb 7:24 But He, because He continues forever, has an unchangeable priesthood.
How about the fiery fight against flesh and blood, is it still applicable?
Eph 6:12 For we do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this age, against spiritual hosts of wickedness in the heavenly places.
We don't struggle physically but to reason and righteousness. Can we fight Satan and his cohorts with deadly weapons like guns or spears? Remember that they are eternal because they are spirits.
Because of this, we should put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground. This is what we all suppose to have as a faithful Christian.
Eph 6:14 Stand therefore, having girded your waist with truth, having put on the breastplate of righteousness,Eph 6:15 and having shod your feet with the preparation of the gospel of peace;Eph 6:16 above all, taking the shield of faith with which you will be able to quench all the fiery darts of the wicked one.Eph 6:17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God;Eph 6:18 praying always with all prayer and supplication in the Spirit, being watchful to this end with all perseverance and supplication for all the saints—
And Apostle Paul said.
Eph 6:19 and for me, that utterance may be given to me, that I may open my mouth boldly to make known the mystery of the gospel,Eph 6:20 for which I am an ambassador in chains; that in it I may speak boldly, as I ought to speak.