Hannah prayed, and said: My heart exults in Yahweh; My horn is exalted in Yahweh; My mouth is enlarged over my enemies; Because I rejoice in your salvation.
(1) The placement of the song is alleged as "a reason," but it appears in the text exactly where it belongs, precisely following the dedication of Samuel at the tabernacle and in connection with the worship service mentioned in  1 Samuel 1:28.  Where else would the critics have placed it?