Before the four angels can unleash their destructive powers they are commanded to stop and wait for something of extreme importance that must be done first – true believers must be sealed. There is a wonderful alternation between terrible things and wonderful things in this book.
Do you have the seal of the Spirit? The people of God are sealed. The day of judgement is restrained and held off until all the people of God – those who are truly saved – are saved and sealed. That is the picture here. If you don’t have the seal of the Spirit, we read later on in the Book of Revelation, you have another mark in its place. Either in your right hand or in your forehead, you have the mark of the beast, the mark of Satan’s instruments, the mark of this world: 666, the number of a man. It is not literal. You don’t have a tattoo on your forehead, or in your hand, any more than the believer has the mark of the Spirit in his forehead. Some foolishly think this is literal. The mark of the beast – what is that? Some physical sign or mark? Of course not. It’s a symbol; it’s all symbols in the Book of Revelation. The mark of the beast means you think like a worldling; you desire like a worldling. Your tastes and your values are for this world, for what fallen man loves. We love ourselves if we are worldlings; we love this world. We pursue greedy objectives. That is how we think as rebels against God. But the seal of the Spirit – which we are going to read is in the forehead: that means in the mind. It has transformed the way you think and view things. Have you the seal of the Spirit? When you become a true child of God, you become so, first of all, in your mind. You are persuaded, convinced. Oh you may have trouble with doubts. The devil may lob doubts in, but broadly speaking you are convinced. You really now believe in Christ. You say to yourself, ‘Why didn’t I see all this before? it so obvious to me. This is reality: that this world is created, that I am a sinner, that I need Christ and I have found him. I follow him, and I think for him and he is in my head most of the time, and my values have changed, and my conscience has come to life. When I read the Bible I know it’s true. Oh, says the cynic, how do you know it’s true? What’s your proof? You tell me about the resurrection. What’s your hard evidence for today? You don’t need evidence. It’s obvious to you it’s true, because you’ve been inwardly persuaded in your mind. You look back and your say, I wasn’t like this six months ago. I doubted everything before I was converted. I couldn’t say I was a believer. But now there is a change come about; I instinctively believe these things. If I get doubts suggested to my mind, I’m troubled, because it goes against the rest of my thinking and I need this to be explained or resolved. You have been persuaded by the Spirit of God. It’s the seal of the Spirit.
When does this sealing take place? It is presented as if it was done once on a single occasion, but since those sealed stand for the saints of Old and New Testaments, who obviously are not all alive at the same time, it must be understood as an ideal representation. This seal, as Hendriksen says, is about ownership and consequent protection. God’s protection surrounds us from the moment we trust in him, and in a more mysterious sense even before this. It is a sealing which determines that, in the outworking of God’s providence, the protection of the saints is taken account of.