Revelation 9:17-19

¹⁷ And in [my] vision the horses and their riders appeared to me like this: the riders wore breastplates the color of fiery red and sapphire blue and sulphur (brimstone) yellow. The heads of the horses looked like lions’ heads, and from their mouths there poured fire and smoke and sulphur (brimstone).

• Red represents sin and death. The love of money is the root of all evil. Men will be extremely boastful, prideful, and self centered during the last days. Money tends to do that to people who trust in it. Look at Facebook, Instagram, and selfies. People are becoming all about themselves and if the worlds economy is better then it has ever been, think of how all of these self centered practices will expand.  
• Blue represents law. False religion that glorifies man always has a bunch of rules and laws to follow. Then people brag about how they are keeping them and they condemn you for not. 
• Sulphur represents death. To be carnally minded is death, Romans 8:5-6. During the end times many people will trust in the efforts of their flesh and it will not bring the peace that they want. Remember how we have been shown that peace is taken from the earth. Peace is not taken from the Church, but from the earth. 
• For those who are according to the flesh and are controlled by its unholy desires set their minds on and pursue those things which gratify the flesh, but those who are according to the Spirit and are controlled by the desires of the Spirit set their minds on and seek those things which gratify the [Holy] Spirit. Now the mind of the flesh [which is sense and reason without the Holy Spirit] is death [death that comprises all the miseries arising from sin, both here and hereafter]. But the mind of the [Holy] Spirit is life and [soul] peace [both now and forever].
• Heads like lions represents satan who wants to be Jesus, 1 Peter 5:8.
• Look at the world and false religions today, death always follows them, because they are all about law, and their teachings are false, they are lead by satan the father of lies. People condemn, kill, and try to destroy others for not following what they believe to be the Truth. Jesus tells us to love our enemies, feed them, cloth them, and to bless them.

¹⁸ A third of mankind was killed by these three plagues—by the fire and the smoke and the sulphur (brimstone) that poured from the mouths of the horses.

• The false teachings of the world will kill a 1/3^rd of mankind. Once again only a 1/3.  
• If this is a physical death remember that the death of the flesh allows our Father to release people from the cares of this world and the deceitfulness of riches. Look at the Rich Ruler and the transformation that began for him in Hades, John 11. Then look at what Peter wrote about Jesus going and preaching to the people in Hades, 1 Peter 3:20. Then you can see that even though a person’s rewards may be lost, they still can be saved after passing through the Fire of Hades, 1 Corinthians 3:15.
• So Jesus, Who Alone judges and Who Alone holds the keys of death, may allow people to die, so that He can set them free. He will remove the flesh to actually save the soul. 

¹⁹ For the power of the horses to do harm is in their mouths and also in their tails. Their tails are like serpents, for they have heads, and it is by means of them that they wound people.

• The mouths are the false leaders, they issue the harmful message that have people trust in themselves and the world's system called Babylon.
• The tails are the followers they, carry out the sulphur or the wounding because they are the ones who will be out and about with their neighbors and coworkers. They will spread the lies of the anti-christ.