She made a vow: Hannah promises her son to the work of the LORD, vowing that he will be a Nazirite from birth (I will give him to the LORD all the days of his life, and no razor shall come upon his head). According to Numbers 6, the vow of a Nazirite included the following:
I will give him to the LORD all the days of his life: The child born would be a Levite, and being of that tribe, would be already dedicated unto the LORD, because God regarded the tribe of Levi as His own special possession. But the time of a Levite’s special dedication to the LORD only lasted from the age of 30 to 50 (Numbers 4:2-3). Here, Hannah was taking something that already belonged to the LORD in some sense, and gave it again to the LORD in a greater way – for the whole life, and in a the dedication of a Nazirite, which was a greater consecration than a Levite.
Even so, we may be dedicated unto the LORD – but is there a greater dedication God wants from us? It would have been easy for Hannah to say, “I don’t need to dedicate my child to the LORD, because he is already dedicated.” But there was a deeper dedication the LORD was trying to draw out of Hannah. Is there a deeper dedication the LORD is trying to draw out of you?