For you are giving thanks well enough, but the other person is not edified.
For thou verily givest thanks well, but the other is not edified.
To be sure, you may give thanks well (nobly), but the bystander is not edified [it does him no good].
You may offer a beautiful prayer of thanksgiving, but the other person is not being built up.
In this case, certainly, you give thanks well, but the other person is not edified.
