G4828–συμμαρτυρέω–summartureō

Who show the work of the law written in their hearts, their conscience also bearing testimony, and their thoughts the mean while accusing, or else excusing one another)

συμμαρτυρούσης summarturousēs “are bearing witness”

The Spirit itself testifieth with our spirit, that we are the children of God:

συμμαρτυρεῖ summarturei “bears witness with”

I say the truth in Christ, I lie not, my conscience also bearing me testimony in the Holy Spirit,

συμμαρτυρούσης summarturousēs “while is bearing witness”