Glorious promise

"No man shall be able to stand before you all the days of your life; as I was with Moses, so I will be with you. I will not leave you nor forsake you." Joshua 1.5

This same promise was also made to Abraham, Isaac, Israel and Moses. Now it was Joshua's time. In every age, the chosen of the Lord are assured of His constant presence. There is no jewel or treasure in the entire universe that can be more precious than this. His presence has been with all those who are with Him. But those who despise Him are lightly esteemed.

God and Abraham

"Look to Abraham your father, And to Sarah who bore you;For I called him alone, and blessed him and increased him.” Isaiah 51.2

Abraham symbolizes the Lord God, Isaac symbolizes Jesus and the spirit - or faith - that moved Abraham to sacrifice his dream was the Spirit of God. Nobody in their right mind would subject themselves to obey the Word of God unconditionally, without being moved by the Holy Spirit.

WALKING WITH GOD

"But he said to me, ‘The Lord, before whom I walk, will send His angel with you and prosper your way; and you shall take a wife for my son from my family and from my father’s house."    Genesis 24.40

Isaac's future depended on his wife's principles of faith. 
This was Abraham's faith. She could not be pagan.
Because he walked in the presence of God, he believed that God would guide his servant through this journey.
This is always what happens: When we walk in God's presence, we have no fears, doubts or anxieties.
Instead, there is complete assurance that He is guiding us.