'Dealing' in the Bible

since you seek [forensic] proof that Christ is speaking in and through me. He is not weak or ineffective in dealing with you, but powerful within you.

For even though He was crucified in weakness [yielding Himself], yet He lives [resurrected] by the power of God [His Father]. For we too are weak in Him [as He was humanly weak], yet we are alive and well [in fellowship] with Him because of the power of God directed toward you.