For the wisdom of this world is foolishness in God's sight. As it is written: "He catches the wise in their craftiness";
NIV
For this world's wisdom is foolishness (absurdity and stupidity) with God, for it is written, He lays hold of the wise in their [own] craftiness; [Job 5:13.]AMP
For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
KJV
But if the unbeliever leaves, let it be so. The brother or sister is not bound in such circumstances; God has called us to live in peace.
NIV
But if the unbelieving partner [actually] leaves, let him do so; in such [cases the remaining] brother or sister is not morally bound. But God has called us to peace.
AMP
But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such cases: but God hath called us to peace.
KJV
Do not deceive yourselves. If any of you think you are wise by the standards of this age, you should become "fools" so that you may become wise.
NIV
Let no person deceive himself. If anyone among you supposes that he is wise in this age, let him become a fool [let him discard his worldly discernment and recognize himself as dull, stupid, and foolish, without true learning and scholarship], that he may become [really] wise. [Isa. 5:21.]AMP
Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.
KJV
Even in the case of lifeless things that make sounds, such as the pipe or harp, how will anyone know what tune is being played unless there is a distinction in the notes?
NIV
If even inanimate musical instruments, such as the flute or the harp, do not give distinct notes, how will anyone [listening] know or understand what is played?
AMP
And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?
KJV
Now, brothers and sisters, if I come to you and speak in tongues, what good will I be to you, unless I bring you some revelation or knowledge or prophecy or word of instruction?
NIV
Now, brethren, if I come to you speaking in [unknown] tongues, how shall I make it to your advantage unless I speak to you either in revelation (disclosure of God's will to man) in knowledge or in prophecy or in instruction?
AMP
Now, brethren, if I come unto you speaking with tongues, what shall I profit you, except I shall speak to you either by revelation, or by knowledge, or by prophesying, or by doctrine?
KJV