"doors and said to the disciples, “Go, stand and speak in the temple to the people all the words of this life.” This command was directly contrary to the order given by the Jewish rulers; but did the apostles say, We cannot do this until we have consulted the magistrates and received permission from them? No; God had said, “Go,” and they obeyed. “They entered into the temple early in the morning, and taught.” AA 79.2"
"Go, stand and speak in the temple to the people all the words of this life."
The EGW passage directly quotes and elaborates on the command given in Acts 5:20.