Prove that the conscience is in your spirit

Romans 9:1: I speak the truth in Christ, I do not lie, my conscience bearing witness with me in the Holy Spirit,
Romans 8:16: The Spirit Himself witnesses with our spirit that we are children of God.
Psalms 51:10: Create in me a clean heart, O God, / And renew a steadfast spirit within me.
Psalms 51:17: The sacrifices of God are a broken spirit; / A broken and a contrite heart, O God, You will not despise.

Romans 1:9; Hebrews 9:14; Deuteronomy 2:30