I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service. -Romans 12:1
Now every sacrifice must be burned with fire… They killed the bullock and laid it on the altar, but it was no sacrifice till they burned it. They slew the lamb, they laid the wood; but there was no sacrifice in the killing of the lamb till it was burned. Know ye not, brethren, we are offerings to God, and that we are a living sacrifice unto Jesus Christ. But how could we be a sacrifice if we were not burned? If we never had the fire of trouble put about us, if we never were kindled, we should lie there without smoke, without flame, unacceptable to God. But be cause ye are His sacrifice, therefore ye must be burned; fire must penetrate you and you must be offered a whole burnt offering, holy and acceptable unto God.
Another reason why we must be put in the furnace is, because else we should not be at all like Jesus Christ. How can we be like Christ, unless our feet, too, are burned in the furnace? If He walked through the flames, must not we do the same?-that “in all things He might be like unto His brethren.” We are we know, to be like Christ in that august appearance when He shall come to be admired of all His saints; we are to be like Him when we shall see Him as He is; and shall we fear to be like Him here? Will we not tread where our Saviour trod?
Yes! Onward, Christian! the captain of your salvation hath gone through the dark valley before you-therefore, onward! Onward with boldness! Onward with courage! Onward with hope! that ye may be like your Saviour, by participation in His sufferings. ~ C.H. Spurgeon