we will choose to live out (in word and deed) the belief that God will do everything necessary to keep His promises.
Abraham, in his old age, believed God would provide the wife Isaac would need from Abraham's people to fulfill the promise God had already made to Abraham, which was to multiply his "descendants as numerous as the stars in the sky and as the sand on the seashore." (Genesis 22:17)
So, Abraham sent his trusted servant to retrieve a wife for Isaac, encouraging his servant with this admonition, "The LORD, the God of heaven, who brought me out of my father's household and my native land and who spoke to me and promised me on oath...He will send His angel before you so that you can get a wife for my son from there." (Genesis 24:7)
Abraham's faith in God's provision became the servant's faith experience as the LORD brought Rebekah - the answer to the servant's prayer. And in response to Abraham's faith, the servant's prayer and God's answer, the servant testified to Rebekah and her family of God's goodness and provision. They all believed God as a result. This is the multiplied ripple effect of living out faith in action. (Genesis 24)