Never has the Lord been forced to give a command that He dislikes so much to give as this one! He "is longsuffering toward us not willing that any should perish but that all should come to repentance" (2 Peter 3:9). He said long ago, "I have no pleasure in the death of the one who dies, says the Lord God. Therefore turn and live" (Ezekiel 18:32). If He could have His way He would save everybody: "God our Savior . . . desires all men to be saved and to come to the knowledge of the truth" (2 Timothy 2:3, 4). "He Himself is the propitiation for our sins, and not for ours only but also for the whole world" (1 John 2:2). The only reason anyone will ever suffer the seven last plagues is that he has resisted and rejected the salvation that the Lord has already given him, because "God has dealt to each one a measure of faith" (Romans 12:3).
http://www.christiansermonsandmusicvideos.com/2015/01/revelation-16-commentary-seven-last.html
