"Children in school learn what we call definitions. A definition is an explanatory statement which tells us exactly what a certain thing is, as "an island is a tract of land completely surrounded by water." God also gives us definitions in His Word. We could cite hundreds of examples! He tells us exactly what certain things are. And in the passage quoted above God tells us exactly what the second death is. "And death and hell were cast into the lake of fire. THIS IS THE SECOND DEATH." Now let me make this a little plainer. Definitions of men can be given backward. For instance, the definition, "An island is a tract of land completely surrounded by water," can be given thus: "A tract of land completely surrounded by water is an island." This is but another way of stating the same fact. It does not, in any way, change the meaning."
"Now let us try this on the definition of the second death. The Bible states it thus: "Death and hell were cast into the lake of fire. This is the second death." Now let us turn this statement around for clarity. "The second death is death and hell cast into the lake of fire." Therefore we have exactly the same meaning either way it is stated. What is the second death? IT IS THE FIRST DEATH AND HELL CAST INTO THE LAKE OF FIRE! This fact is very important. Most Christians and nearly all preachers read the Word of God very superficially. They read and suppose that the second death is men being tortured forever in the lake of fire. Yet there is absolutely nothing in this passage about men! The verse that follows the one we are considering speaks of men being cast into the lake of fire. But not this one! It is the state of death and the condition of hell that are cast into the lake of fire. The second death is not men cast into the lake of fire, or men tormented or tortured forever. That’s not in the Book! The Holy Spirit has made it very simple and plain. The second death is the first death and hell cast into the lake of fire. That is the Holy Spirit’s definition, not mine."
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"There is a strange and wonderful statement found in Revelation 2:11. "He that hath an ear, let him hear what the Spirit sayeth unto the churches; he that overcometh shall not be hurt of the second death." I would draw your attention to the fact that it does not say that the overcomer experiences nothing of the second death, that he does not pass through it, or that its work is not wrought in his life; but the thought is that he will not be "hurt" by it. It is possible to pass through the most terrible experience and not be hurt by it. Listen! "And the three men, Shadrach, Meshack, and Abednego, fell down bound into the midst of the burning fiery furnace. Then Nebuchadnezzar the king was astonished, and rose up in haste, and spake, and said unto his counselors, Did not we cast three men bound into the midst of the fire? They answered and said unto the king, True, O king. He answered and said, Lo, I see four men loose, walking in the midst of the fire, and they have no hurt; and the form of the fourth is like the Son of God" (Dan. 3:23-25). Oh, to know that we can pass through the darkest night or the hottest fire and not be hurt by it if Jesus goes with us! How heartening and assuring to read such promises as these: "When thou passeth through the waters, I will be with thee; and through the rivers, they shall not overflow thee; and when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee" (Isa. 43:2). The great difference between the unbeliever and the child of God is that the unbeliever is taken hand and foot and "cast" into the lake of fire, fighting, kicking, screaming, and resisting all the way, whereas the child of God willingly and obediently walks into the fiery processings of God hand in hand with His blessed Redeemer. And, one way or the other, ALL MUST DIE UNTO SIN!"