NET
19 and what is the incomparable greatness of his power toward us who believe, as displayed in the exercise of his immense strength.
Darby
19 and what the surpassing greatness of his power towards us who believe, according to the working of the might of his strength,
KJV
19 And what [is] the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power,