Why does the promise of the Holy Spirit now come to Gentiles directly?
The promise of the Holy Spirit comes to Gentiles because God's purposes are now coming to fruition in the Age of Grace. Gentiles receive the Spirit through salvation, not Law-keeping, and the Holy Spirit becomes their guideline rather than the Ten Commandments.
Les teaches that Gentiles receive the promise of the Holy Spirit in this glorious Age of Grace, when all of God's purposes are coming to fruition. Believers are not under the Law, and as a result of their salvation experience God gives them something far better than the Ten Commandments: the Holy Spirit Himself. The Holy Spirit becomes their guideline, not the Ten Commandments. Not being under the Law does not mean ignoring that killing, stealing, and adultery are wrong; the Holy Spirit shows believers those things. Grace Age believers are delivered from the Law, as Romans chapter 7 says so beautifully.
More Questions
Who was the promise of the Holy Spirit meant for — Jews only or Gentiles too?
God's saving purpose was that Gentiles, not just Israel, would receive the promise of the Holy Spirit.