The relative values of the persons appear to be regulated according to an estimate of the probable value of their future work:

As regards the…

From a month old even unto five years old. —That is, if a parent, or any other person, devotes his or anyone else’s child to the sanctuary…

And if [it be] from a month old even unto five years old
That is, if a man devotes his child to the Lord within such…

Zeal for the service of God inclined the Israelites, on some occasions, to dedicate themselves or their children to the service of the Lord, in his…