Did Israel accept Jesus as Messiah after the resurrection and in Acts?
No. According to the supplied context, even after the resurrection and into the book of Acts, Israel would not let the bud come into full flower; they kept rejecting it. Instead of clipping it off again, God raised up another apostle and revealed the full flower through Paul’s revelations.
Les explains that after Israel cut off the bud, God in His sovereignty put it back on. Even in the post-resurrection period and on into the book of Acts, Israel still would not let that bud come into full flower; they continued rejecting it. But instead of clipping it off, God now did something totally different: He raised up another apostle, and through the revelations given then to the apostle Paul, the full flower is now seen. Les clarifies that it is not Paul himself, but his revelations, and that Christ is the flower, revealed in a way nowhere else in Scripture can pick it up.