Usted buscó: kill them softly (Inglés - Latín)

kill them
et occidit eos

kill them all
occidere omnes predonun

kill them first
prius occidit eos:

kill them all let god sort them out
kill them all let god sort it out

kill them all for a better future
occide omnes in futurum!

fight and kill them all. no mercy
pugnent et omnes interficiunt. nulla misericordia

ye eat the fat, and ye clothe you with the wool, ye kill them that are fed: but ye feed not the flock.
lac comedebatis et lanis operiebamini et quod crassum erat occidebatis gregem autem meum non pascebati

and when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
et cum finierint testimonium suum bestia quae ascendit de abysso faciet adversus illos bellum et vincet eos et occidet illo

and to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man.
et datum est illis ne occiderent eos sed ut cruciarentur mensibus quinque et cruciatus eorum ut cruciatus scorpii cum percutit homine