KJV:
Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.
NASB:
and there must be no filthiness and silly talk, or coarse jesting, which are not fitting, but rather giving of thanks.
KJV:
Wives, submit yourselves unto your own husbands, as it is fit in the Lord.
NASB:
Wives, be subject to your husbands, as is fitting in the Lord.
KJV:
Wherefore, though I might be much bold in Christ to enjoin thee that which is convenient,
NASB:
Therefore, though I have enough confidence in Christ to order you to do what is proper,