G4828–συμμαρτυρέω–summartureō

who shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts accusing or else excusing themselves between themselves;)

συμμαρτυρούσης summarturousēs “are bearing witness”

The Spirit itself bears witness with our spirit, that we are children of God.

συμμαρτυρεῖ summarturei “bears witness with”

I say [supplied: the] truth in Christ, I lie not, my conscience bearing witness with me in [supplied: the] Holy Spirit,

συμμαρτυρούσης summarturousēs “while is bearing witness”