1 Samuel 2:18-20

Now Samuel was ministering before the LORD, as a child dressed in a linen ephod [a sacred item of priestly clothing]. Moreover, his mother would make him a little robe and would bring it up to him each year when she came up with her husband to offer the yearly sacrifice. Then Eli would bless Elkanah and his wife and say, “May the LORD give you children by this woman in place of the one she asked for which was dedicated to the LORD.” Then they would return to their own home.