But the Spirit of the Lord clothed Gideon, and he sounded the trumpet, and the Abiezrites were called out to follow him. And he sent messengers throughout all Manasseh, and they too were called out to follow him. And he sent messengers to Asher, Zebulun, and Naphtali, and they went up to meet them. (Judges 6:34-35 ESV)
And the Lord said to Gideon, “The people are still too many. Take them down to the water, and I will test them for you there, and anyone of whom I say to you, ‘This one shall go with you,’ shall go with you, and anyone of whom I say to you, ‘This one shall not go with you,’ shall not go.” So he brought the people down to the water. And the Lord said to Gideon, “Every one who laps the water with his tongue, as a dog laps, you shall set by himself. Likewise, every one who kneels down to drink.” And the number of those who lapped, putting their hands to their mouths, was 300 men, but all the rest of the people knelt down to drink water. And the Lord said to Gideon, “With the 300 men who lapped I will save you and give the Midianites into your hand, and let all the others go every man to his home.” (Judges 7:4-7 ESV)
This may seem like an odd place to turn to, to discuss what happened at Pentecost and the nature of tongues, but you'll have to excuse me, I have a bit of an eye for Old Testament patterns and types. Allow me to present the connection, and then I'll leave it to the reader to decide if the typology is valid. The case for the drawing and separating nature of tongues to unbelievers does not stand or fall on this passage; it is just a fascinating little detour, which should, if nothing else, give you something else to ponder.
Gideon was clothed with power from on high when the Spirit came upon him. He sounded the trumpet, and multitudes were drawn to him from all over Israel. The Lord then separated the men at the waters and those who lapped with their tongues were chosen. With those 300 men who remained the Lord brought about a great salvation for Israel.
On the day of Pentecost the believers were clothed with power from on high and spilled out into the streets making a great noise empowered by the Spirit (prophetic noises in scripture are often compared to a trumpet blast or the sound of rushing waters). Multitudes from all over the world were gathered by this noise and came to see what was going on. They were divided with some being amazed, whilst others were scornful. Of those who remained and heard Peter's message, 3000 were added to the church as the Lord brought about a great salvation in Israel.
Is there a connection between Gideon's 300 and Peter's 3000, and the drawing and separating that took place? It's worth chewing over. Let me know what you think.