Speaking in tongues, just means that the person doing the teaching of the bible is just someone who does not speak the local language. Someone who understands the foreigner's language must translate. Speaking in tongues does not mean that someone is saying some nonsensical conjecture like "OOga baba lakata nobody but god can understand me bahaya doraba foolooto papaya".. That is not what it means to speak in tongues, although it may as well SOUND any way close to that, as long as a person who understands the foreign language can translate for the group listening. Tongues is generally used to mean "word" or "words" aka "languages", and less commonly used literally, to just mean the part of the mouth with tastebunds on it that you use to speak with. Psalm 12:3-5 (New International Version) 3 May the LORD cut off all flattering lips and every boastful tongue 4 that says, "We will triumph with our tongues; we own our lips [a] —who is our master?" 5 "Because of the oppression of the weak and the groaning of the needy, I will now arise," says the LORD. "I will protect them from those who malign them." Psalm 31:20 In the shelter of your presence you hide them from the intrigues of men; in your dwelling you keep them safe from accusing tongues. Psalm 57:4 I am in the midst of lions; I lie among ravenous beasts— men whose teeth are spears and arrows, whose tongues are sharp swords. Psalm 73:9 Their mouths lay claim to heaven, and their tongues take possession of the earth. Psalm 78:36 But then they would flatter him with their mouths, lying to him with their tongues; Psalm 109:2 for wicked and deceitful men have opened their mouths against me; they have spoken against me with lying tongues. Psalm 120:2 Save me, O LORD, from lying lips and from deceitful tongues. Psalm 126:2 Our mouths were filled with laughter, our tongues with songs of joy. Then it was said among the nations, "The LORD has done great things for them." Isaiah 5:24 Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the LORD Almighty and spurned the word of the Holy One of Israel. Isaiah 28:11 Very well then, with foreign lips and strange tongues God will speak to this people, Isaiah 66:18 "And I, because of their actions and their imaginations, am about to come and gather all nations and tongues, and they will come and see my glory. Jeremiah 9:5 Friend deceives friend, and no one speaks the truth. They have taught their tongues to lie; they weary themselves with sinning. Jeremiah 18:18 They said, "Come, let's make plans against Jeremiah; for the teaching of the law by the priest will not be lost, nor will counsel from the wise, nor the word from the prophets. So come, let's attack him with our tongues and pay no attention to anything he says." Jeremiah 23:31 Yes," declares the LORD, "I am against the prophets who wag their own tongues and yet declare, 'The LORD declares.' Micah 6:12 Her rich men are violent; her people are liars and their tongues speak deceitfully. 1When the day of Pentecost came, they were all together in one place. 2Suddenly a sound like the blowing of a violent wind came from heaven and filled the whole house where they were sitting. 3They saw what seemed to be tongues of fire that separated and came to rest on each of them. 4All of them were filled with the Holy Spirit and began to speak in other tongues[a] as the Spirit enabled them. 5Now there were staying in Jerusalem God-fearing Jews from every nation under heaven. 6When they heard this sound, a crowd came together in bewilderment, because each one heard them speaking in his own language. 7Utterly amazed, they asked: "Are not all these men who are speaking Galileans? 8Then how is it that each of us hears them in his own native language? 13Some, however, made fun of them and said, "They have had too much wine." Acts 10:44While Peter was still speaking these words, the Holy Spirit came on all who heard the message. 45The circumcised believers who had come with Peter were astonished that the gift of the Holy Spirit had been poured out even on the Gentiles. 46For they heard them speaking in tongues(*) and praising God. (*) or other languages Acts 10 - Passage*Lookup - New International Version - BibleGateway.com Going to foreign nations to teach: Acts 19:4Paul said, "John's baptism was a baptism of repentance. He told the people to believe in the one coming after him, that is, in Jesus." 5On hearing this, they were baptized into the name of the Lord Jesus. 6When Paul placed his hands on them, the Holy Spirit came on them, and they spoke in tongues[c] and prophesied. 7There were about twelve men in all. [c]Or other languages 1 Corinthians 12:9-11 (New International Version) Gifts of God 9to another faith by the same Spirit, to another gifts of healing by that one Spirit, 10to another miraculous powers, to another prophecy, to another distinguishing between spirits, to another speaking in different kinds of tongues,[a] and to still another the interpretation of tongues.* 11All these are the work of one and the same Spirit, and he gives them to each one, just as he determines. *Or languages; also in verse 28 1 Corinthians 14:5 I would like every one of you to speak in tongues, but I would rather have you prophesy. He who prophesies is greater than one who speaks in tongues, unless he interprets, so that the church may be edified. 1 Corinthians 14:21 In the Law it is written: "Through men of strange tongues and through the lips of foreigners I will speak to this people, but even then they will not listen to me," says the Lord. 27If anyone speaks in a tongue, two—or at the most three—should speak, one at a time, and someone must interpret. 28If there is no interpreter, the speaker should keep quiet in the church and speak to himself and God. 10Undoubtedly there are all sorts of languages in the world, yet none of them is without meaning. 11If then I do not grasp the meaning of what someone is saying, I am a foreigner to the speaker, and he is a foreigner to me. 12So it is with you. Since you are eager to have spiritual gifts, try to excel in gifts that build up the church.