All the points in Exodus 13 relate to spiritual experience on the positive side. For example, Exodus 13:2 speaks of the sanctification of the firstborn. Certainly this signifies a particular aspect of the spiritual experience of God’s people in coming out of Egypt. It indicates that the purpose of our exodus from the world is to be sanctified to the Lord.
Sanctification is based on redemption….The Lord required only the firstborn to be sanctified [Exodus 13:2] because they were the redeemed ones. This indicates that whatever or whoever is redeemed must also be sanctified. This principle applies to us as believers in Christ. Because we have been redeemed, we must also be sanctified. Otherwise, we shall remain in Egypt, in the world. If we desire to experience a genuine exodus from Egypt, we must be both redeemed and sanctified. No one can come out of Egypt without being sanctified unto the Lord.
Redemption is for our security, whereas sanctification is for God’s purpose. If we are shortsighted, we may see only redemption, which is for our benefit. But if we have the proper discernment, we shall see that redemption must be followed by sanctification (Romans 6:22), which is for the fulfillment of God’s purpose. (Life-study of Exodus, ch. 27)