Berean Study Bible
The Spirit Himself testifies with our spirit that we are God’s children.

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

American Standard Version
The Spirit himself beareth witness with our spirit, that we are children of God:

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

Douay-Rheims Bible
For the Spirit himself giveth testimony to our spirit, that we are the sons of God.

English Revised Version
The Spirit himself beareth witness with our spirit, that we are children of God:

Young's Literal Translation
The Spirit himself doth testify with our spirit, that we are children of God;