1 Kings 1:33-35

Then he ordered, “Gather my servants, then mount my son Solomon on my royal mule and lead him in procession down to Gihon. When you get there, Zadok the priest and Nathan the prophet will anoint him king over Israel. Then blow the ram’s horn trumpet and shout, ‘Long live King Solomon!’ You will then accompany him as he enters and takes his place on my throne, succeeding me as king. I have named him ruler over Israel and Judah.”