'Unknown' in the Bible

for passing through and contemplating your objects of worship, I found also an erection on which had been inscribed: To God -- unknown; whom, therefore -- not knowing -- ye do worship, this One I announce to you.

for he who is speaking in an unknown tongue -- to men he doth not speak, but to God, for no one doth hearken, and in spirit he doth speak secrets;

he who is speaking in an unknown tongue, himself doth edify, and he who is prophesying, an assembly doth edify;

wherefore he who is speaking in an unknown tongue -- let him pray that he may interpret;

for if I pray in an unknown tongue, my spirit doth pray, and my understanding is unfruitful.

but in an assembly I wish to speak five words through my understanding, that others also I may instruct, rather than myriads of words in an unknown tongue.

if an unknown tongue any one do speak, by two, or at the most, by three, and in turn, and let one interpret;

as unknown, and recognized; as dying, and lo, we live; as chastened, and not put to death;

and was unknown by face to the assemblies of Judea, that are in Christ,