A razor blade and a pencil! Prisoners of war in WWII who could scrape together a razor blade and a pencil were able to construct simple radios, allowing them to hear the truth about allied advances. Their captors lied to them about who was winning the war in order to discourage them and manipulate them into doing self-destructive things. But hearing the truth through these “foxhole radios,” many prisoners found the strength to resist.
You and I have been “prisoners” in this world, kept in the dark and lied to by Satan, in an attempt to control us and cause us to do self-destructive things. We don’t need a razor blade or a pencil; we need God’s Holy Spirit to “guide [us] into all truth” John 16:13. Jesus gives this Spirit to all those who fully trust Him.
“If you love me, you will obey what I command. And I will ask the Father, and he will give you another Counselor to be with you forever— the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you. (John 14:15-17)
Notice that the kind of trust Jesus responds to is the trust that is turned into action through obedience. That is because Jesus’ commands tend to contradict the things the world tells us. Who you trust is revealed by who you obey. Also see in those verses that the Holy Spirit does not merely visit, He lives within the believer forever! This is the best part of the “Good News.” If Jesus merely died for our sins, we would still be stuck in our same. sinful condition. But by giving us the Holy Spirit, Jesus connects us to God in the way God designed for humans to operate. Now we have access to the truth from within our souls, truth that contradicts the lies we are taught in the world. (An example of a contradictory truth is Jesus’ teaching that the greatest person in a group is the one who takes the lowest position and serves the most. Luke 22:26)
John has been living with this Spirit and knows how wonderful the difference is. He also knows how deceptive and tempting the lies of the world are. So John reassures believers with these words:
You, dear children, are from God and have overcome them (deceiving spirits – in verse 3), because the one who is in you is greater than the one who is in the world. They are from the world and therefore speak from the viewpoint of the world, and the world listens to them. We are from God, and whoever knows God listens to us; but whoever is not from God does not listen to us. This is how we recognize the Spirit of truth and the spirit of falsehood. (1 John 4:4-6)
The Spirit of God is our foxhole radio. During the war, foxhole radios only helped the prisoners if they listened to them and believed what they were hearing. You get the point…