If any think they are prophets or otherwise gifted by the Spirit, let them acknowledge that what I am writing to you is the Lord's command.
NIV
If anyone thinks and claims that he is a prophet [filled with and governed by the Holy Spirit of God and inspired to interpret the divine will and purpose in preaching or teaching] or has any other spiritual endowment, let him understand (recognize and acknowledge) that what I am writing to you is a command of the Lord.
AMP
If any man think himself to be a prophet, or spiritual, let him acknowledge that the things that I write unto you are the commandments of the Lord.
KJV
Therefore, my brothers and sisters, be eager to prophesy, and do not forbid speaking in tongues.
NIV
So [to conclude], my brethren, earnestly desire and set your hearts on prophesying (on being inspired to preach and teach and to interpret God's will and purpose), and do not forbid or hinder speaking in [unknown] tongues.
AMP
Wherefore, brethren, covet to prophesy, and forbid not to speak with tongues.
KJV
If then I do not grasp the meaning of what someone is saying, I am a foreigner to the speaker, and the speaker is a foreigner to me.
NIV
But if I do not know the force and significance of the speech (language), I shall seem to be a foreigner to the one who speaks [to me], and the speaker who addresses [me] will seem a foreigner to me.
AMP
Therefore if I know not the meaning of the voice, I shall be unto him that speaketh a barbarian, and he that speaketh shall be a barbarian unto me.
KJV
Undoubtedly there are all sorts of languages in the world, yet none of them is without meaning.
NIV
There are, I suppose, all these many [to us unknown] tongues in the world [somewhere], and none is destitute of [its own power of] expression and meaning.
AMP
There are, it may be, so many kinds of voices in the world, and none of them is without signification.
KJV
So it is with you. Unless you speak intelligible words with your tongue, how will anyone know what you are saying? You will just be speaking into the air.
NIV
Just so it is with you; if you in the [unknown] tongue speak words that are not intelligible, how will anyone understand what you are saying? For you will be talking into empty space!
AMP
So likewise ye, except ye utter by the tongue words easy to be understood, how shall it be known what is spoken? for ye shall speak into the air.
KJV
If they want to inquire about something, they should ask their own husbands at home; for it is disgraceful for a woman to speak in the church.
NIV
But if there is anything they want to learn, they should ask their own husbands at home, for it is disgraceful for a woman to talk in church [for her to usurp and exercise authority over men in the church].
AMP
And if they will learn any thing, let them ask their husbands at home: for it is a shame for women to speak in the church.
KJV
Those who ignore this will themselves be ignored.
NIV
But if anyone disregards or does not recognize [that it is a command of the Lord], he is disregarded and not recognized [he is one whom God knows not].
AMP
But if any man be ignorant, let him be ignorant.
KJV