With three bullocks ... And they slew a bullock. — At first sight, there seems to be a discrepancy here, and the Septuagi…

And when she had weaned him
At the usual time of weaning children; (See Gill on 1 Samuel 1:23) …

Elkanah and his family had a journey before them, and a family of children to take with them, yet they would not move until they had worshipped God…