In the Old Testament, personal relationship with God showed itself in separation, and this is symbolized in the life of Abraham by his separation from his country and from his kith and kin. To day the separation is more of a mental and moral separation from the way that those who are dearest to us look at things, that is, if they have not a personal relationship with God. Jesus Christ emphasized this (see Luke 14:26).
Faith never knows where it is being led, but it loves and knows the One Who is leading. It is a life of Faith, not of intellect and reason, but a life of knowing Who makes us "go." The root of faith is the knowledge of a Person, and one of the biggest snares is the idea that God is sure to lead us to success.
The final stage in the life of faith is attainment of character. There are many passing transfigurations of character; when we pray we feel the blessing of God enwrapping us and for the time being we are changed, then we get back to the ordinary days and ways and the glory vanishes. The life of faith is not a life of mounting up with wings, but a life of walking and not fainting. It is not a question of sanctification; but of something infinitely further on than sanctification, of faith that has been tried and proved and has stood the test. Abraham is not a type of sanctification, but a type of the life of faith, a tried faith built on a real God. "Abraham believed God."