Nehemiah 6:2-4

then Sanballat and Geshem sent a message to me, saying, “Come, let us meet together at Chephirim in the plain of Ono.” But they were planning to harm me. So I sent messengers to them, saying, “I am doing a great work and I cannot come down. Why should the work stop while I leave it and come down to you?” They sent messages to me four times in this manner, and I answered them in the same way.