The virus that was caught in the tissue represents those who are embarrassed to spread the message about the Kingdom. Then the evil one comes and snatches away the message meant for others. The person who caught the virus but suppressed the symptoms represents those who hear the message, immediately receive, but then resist and walk away. Since the virus doesn’t take hold they don’t display the symptoms of the Kingdom. The people who were immune to the virus had heard about the Kingdom before but didn’t believe its message could provide answers to the worries of this life and preferred the lure of wealth, so again no fruit of the Kingdom is produced. The virus that infected other people represents those who truly hear and understand God’s word through the pain, suffering and weakness of an individual and spreads like an outbreak producing Kingdom symptoms thirty, sixty, or even a hundred times as much as the index case!
Matthew 13 v3-9, 19-23
Then he told them a story: “A youth worker worked for a youth ministry that produced fine young people. He said to himself, ‘What should I do? I don’t have a strategy for all my young people.’ Then he said, ‘I know! I’ll tear up all my plans and build bigger ones. Then I’ll have accounted for every young person and every leader. And I’ll sit back and say to myself, “My friend, you have planned for years to come. Now take it easy! Eat, sing, and design icebreakers!”’
“But God said to him, ‘You fool! What if you die this very night? Then what will happen to the master plan you have worked for?’
Look here, when we say, “Today or tomorrow we are going to teach a certain topic and learn all about it. We will run a small group and make the Lord known.” How do we know what the life of people will be like tomorrow? Their faith is like a fire—it burns brightly a little while, then dies downs, then brightly again. What we ought to say is, “If the Lord wants to, He will use us to reveal Himself to them.”
Otherwise we are boasting about our own plans, and all such boasting is evil.