Hebrews 10:15

And the Holy Spirit also beareth witness to us; for after he hath said.

This verse is invaluable for the light it sheds on the witness of the Holy Spirit. Thomas accurately read the implications of this verse, thus,

Here again, with great significance, the Holy Spirit is mentioned. Not only is he the source and author of the divine message in Psalms 3:7, and of the true meaning of the tabernacle (Hebrews 9:8); but he is shown to be witnessing through the statements of Scripture to the reality and power of the new covenant. This is the true witness of the Spirit, not something dependent upon our own variable emotions, but that which is objective to us, and fixed, the Word of God.[20]

Thomas also noted in this context the various functions assigned to members of the Godhead, in these words,

We have the three-fold revelation of God in this passage, a very definite spiritual and practical exemplification of the Holy Trinity, in the WILL of God (Hebrews 10:9), the work of Christ (Hebrews 10:12), and the WITNESS of the Spirit (Hebrews 10:15).[21]

Jeremiah was the mortal author of the passage here said to be spoken by the Holy Spirit; and thus this verse becomes another independent witness to the inspiration of the Holy Bible. The author does not say that "Jeremiah said," but that "the Holy Spirit said."

[20] W. H. Griffith Thomas, op. cit., p. 128.

[21] Ibid.