“When they saw this,
They made it known
What had been told them
About this child.”
ἰδόντες δὲ ἐγνώρισαν περὶ τοῦ ῥήματος τοῦ λαληθέντος αὐτοῖς περὶ τοῦ παιδίου τούτου.
Luke indicated that these shepherds, after they had seen the child in the manger (ἰδόντες δὲ), they made it known or proclaimed (ἐγνώρισαν) to others what had been told to them (περὶ τοῦ ῥήματος τοῦ λαληθέντος αὐτοῖς) about this child (περὶ τοῦ παιδίου τούτου). These shepherds were the original apostles or prophets of Jesus, telling the message about the new born savior that they had received from the angel of the Lord.
Eugene Finnegan Bible Project 