Jehovah the Holy Ghost
Compare
Exo 17:2 Wherefore the people did chide with Moses, and said, Give us water that we may drink. And Moses said unto them, Why chide ye with me? wherefore do ye tempt the LORD (Jehovah)?
With
Heb 3:7 Wherefore as the Holy Ghost saith, To day if ye will hear his voice,
Heb 3:8 Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
Heb 3:9 When your fathers tempted me, proved me, and saw my works forty years.
Conclusion: The Holy Ghost is Jehovah