John Wesley on Exodus 29:38

This daily service, a lamb offered upon the altar every morning, and every evening, typified the continual intercession which Christ ever lives to make in the virtue of his satisfaction for the continual sanctification of his church: though he offered himself once for all, yet that one offering thus becomes a continual offering. And this teaches us to offer up to God the spiritual sacrifices of prayer and praise every day, morning and evening, in humble acknowledgment of our dependence upon him, and our obligations to him.