Leviticus 5:7
And if he be not able to bring a lamb, then he shall bring for his trespass, which he hath committed, two turtledoves, or two young pigeons, unto the LORD; one for a sin offering, and the other for a burnt offering. And if he be not able to bring a lamb, then he shall bring for his trespass, which he hath committed, two turtledoves, or two young pigeons, unto the LORD; one for a sin offering, and the other for a burnt offering.
If a person was not able to bring a lamb for his trespass, he was permitted to bring two turtledoves or two young pigeons to the Lord instead, one for a sin offering and the other for a burnt offering, yet the humbler substitute was to be prepared with the same care and exactness as the costlier animal. This provision shows that the poor are as precious in God's sight as the most wealthy when they are willing and obedient. The most humble offering is accepted when it is all the poor can bring, and this assurance stands on record for their encouragement.
It was fulfilled in the parents of Jesus, who were poor and could bring only a pair of turtledoves or two young pigeons in connection with the priceless gift of the Son of God. The poor often give more freely and with greater sacrifice in their simple dove offerings than the wealthy who give from abundance and feel no personal inconvenience. Such simple, cheerful freewill gifts are far more acceptable and fragrant to God than thousands of gold and silver given grudgingly.