The enemies of the disciples could not but be convinced that Christ had risen from the dead. The evidence was too clear to be doubted. Nevertheless, they hardened their hearts, refusing to repent of the terrible deed they had committed in putting Jesus to death. Abundant evidence that the apostles were speaking and acting under divine inspiration had been given the Jewish rulers, but they firmly resisted the message of truth. Christ had not come in the manner that they expected, and though at times they had been convinced that He was the Son of God, yet they had stifled conviction, and crucified Him. In mercy God gave them still further evidence, and now another opportunity was granted them to turn to Him. He sent the disciples to tell them that they had killed the Prince of life, and in this terrible charge He gave them another call to repentance. But feeling secure in their own righteousness, the Jewish teachers refused to admit that the men charging them with crucifying Christ were …
"Ye stiffnecked and uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers did, so do ye."
Both passages describe the resistance of the Jewish leaders to the message of God and their refusal to repent, highlighting their stubbornness and rejection of the Holy Spirit. EGW applies this to their rejection of the disciples' message after the crucifixion.
"stifled the convictions of the Spirit. The influence that controls the children of disobedience worked in them, leading them to abuse the men through whom God was working. The malignity of their rebellion was intensified by each successive act of resistance against God and the message He had given His servants to declare. Every day, in their refusal to repent, the Jewish leaders took up their rebellion afresh, preparing to reap that which they had sown. AA 61.2"
"Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap."
The EGW passage directly applies the principle of sowing and reaping to the Jewish leaders' refusal to repent. This is a clear application of the principle found in Galatians 6:7.
"Ye stiffnecked and uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers did, so do ye."
Both passages discuss resisting the Holy Spirit. The Acts verse is a direct accusation, while the EGW passage describes the process of resisting and the consequences. The connection is strong and thematic.