NET
15 Also, we are found to be false witnesses about God, because we have testified against God that he raised Christ from the dead, when in reality he did not raise him, if indeed the dead are not raised.
Darby
15 And we are found also false witnesses of God; for we have witnessed concerning God that he raised the Christ, whom he has not raised if indeed [those that are] dead are not raised.
KJV
15 Yea, and we are found false witnesses of God; because we have testified of God that he raised up Christ: whom he raised not up, if so be that the dead rise not.