1 Samuel 2:20 And Eli would bless Elkanah and his wife, and say, “The LORD give you descendants from this woman for the loan that was given to the LORD.”
This is only partially the story. They did dedicate Samuel unto the LORD, however they simple gave back to God what was already His. God gave Samuel to them. Now what will you do? God has given mankind so much, what do we do with it? Give it to the Lord and you will never loss it. We dedicated our kids to the LORD from day one. They are His. Our lives have been dedicated to Him. They are His.