One of the manliest passages in Scripture comes in Revelation 19:11-21.
The Second Coming of Christ will be NOTHING like His first.
When he came to Earth, that wonderful Christmas Morn', he was born in a humble, meek manner. His coming was noted, rejoiced over, then seemingly forgotten. Jesus during his time on earth spent his life in servitude.
He healed the sick. He cast out demons. He came to "seek and save the lost". He was a "doctor to the sick". He performed miracles. He lived his life as we should. He was our example, allowing the Holy Spirit to guide and direct his life...as we should.
Jesus didn't even come to condemn the world (John 3:17) but to SAVE IT!
Christ came, lived a humble life, submitted to the will of the Father and died a horrific death on a cross, so that the world might be justified to the Father. He then rose from the grave on the 3rd day and conquered sin and death!
He then promised a Second Coming.
The second coming would not be meek and mild-mannered, but BOLD and INTENSE! Jesus WILL come as a King coming to claim His throne. He will spare His Children (in fact, we will be with Him in the air!) and will wipe out his enemies. Jesus the Warrior King will come down from Heaven and take over the earth. It will be so bloody, so intense, that the birds of prey will gorge themselves on the flesh of the enemies of Christ.
If that doesn't scream "Manly" I guess, I have no idea what manly is. Here is the passage:
"11 Then I saw j heaven opened, and behold, k a white horse! The one sitting on it is called l Faithful and True, and m in righteousness he judges and makes war. 12 n His eyes are like a flame of fire, and on his head are o many diadems, and he has p a name written that no one knows but himself. 13 He is clothed in q a robe dipped in  blood, and the name by which he is called is r The Word of God. 14 And the armies of heaven, s arrayed in fine linen, white and pure, t were following him on white horses. 15 u From his mouth comes a sharp sword v with which to strike down the nations, and w he will rule them with a rod of iron. x He will tread the winepress of the fury of the wrath of God the Almighty. 16 On his robe and on his thigh y he has a name written, z King of kings and Lord of lords.
17 Then I saw an angel standing in the sun, and with a loud voice he called to a all the birds that fly directly overhead, b “Come, gather for c the great supper of God, 18 d to eat the flesh of kings, the flesh of captains, the flesh of mighty men, the flesh of horses and their riders, and the flesh of all men, both free and slave,  both small and great.” 19 And I saw e the beast and the kings of the earth with their armies f gathered to make war against him who was sitting on the horse and against his army. 20 And the beast was captured, and with it g the false prophet h who in its presence  had done the signs by which he deceived those who had received the mark of the beast and those who i worshiped its image. These two were j thrown alive into the lake of k fire that burns with sulfur. 21 And the rest were slain by the sword l that came from the mouth of him who was sitting on the horse, and m all the birds were gorged with their flesh." (Revelation 19:11-21 ESV)