Romanos 8

The Spirit (o. pneuma) itself bears witness with our spirit, (o. pneuma) that we are the children of God:

Porque el mismo Espíritu da testimonio á nuestro espíritu que somos hijos de Dios.

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

The Spirit himself testifies with our spirit that we are children of God;