Romans 8:16

¹⁶ The Spirit Himself bears witness with our spirit that we are children of God,

Himself — the Holy Spirit is a person

with our spirit — not “to our spirit.” A continuation of verse 15, “we cry Abba, Father.” This is our spirit, but it is produced in us by the Holy Spirit.

children — Greek word teknon from tikto, to beget, “born ones” — like the Scottish word “bairn.”