'Thankfully' in the Bible

and if I thankfully do partake, why am I evil spoken of, for that for which I give thanks?

ye working together also for us by your supplication, that the gift through many persons to us, through many may be thankfully acknowledged for us.

Through Him, therefore, let us at all times offer up to God a sacrifice of praise, which is the fruit of lips that thankfully acknowledge and confess and glorify His name.