Mark 6:30 ASV

The Bible notes several accounts of servants telling all to their master. One of the earliest accounts is that of Abraham's servant who tells all to Isaac (Genesis 24:66) about his journey on which he found Rebekah to become a wife for Isaac. In this passage, the servants of Jesus reported all things, "both what they had done and what they had taught".

Like Abraham's servant, the apostles of Jesus were faithful.
They were not gossiping about the activities of others but faithfully reporting on their own activities.