Leviticus 14:21

If he be poor, and cannot get, &c.— The humanity of the Mosaic law is always discernible; provision is constantly made for the poor. Pelicanus observes well upon this place, that though there was an exchange made of two lambs for two turtle-doves, or two pigeons, in consideration of a man's poverty, yet no person whatsoever, whether rich or poor, could be cleansed without the sacrifice of one lamb; which may well be looked upon as a figure of the Lamb of God, who alone taketh away the sins of the whole world. Note; God ever testifies an especial care for the poor, and provides, that however destitute they may be of things temporal, they shall not want the spiritual blessings in Christ Jesus.