An Only Child is Lend to the Lord

I Samuel 2:18-21

18  But Samuel ministered before the LORD, being a child, girded with a linen ephod. 
19  Moreover his mother made him a little coat, and brought it to him from year to year, when she came up with her husband to offer the yearly sacrifice. 
20  And Eli blessed Elkanah and his wife, and said, The LORD give thee seed of this woman for the loan which is lent to the LORD. And they went unto their own home. 
21  And the LORD visited Hannah, so that she conceived, and bare three sons and two daughters. And the child Samuel grew before the LORD.