How dedicated a person is to doing the will of God is directly related to the understanding, hope, and trust that one has in God's promises. A person that is ignorant of God's promises will likely not be very dedicated to them. A person who is not confident in God's willingness to fulfill His promises will not likely be very dedicated to them. A person who does not trust in God's ability to fulfill His promises will not likely be very dedicated to them. On the other hand, those who read the Word of God, know His promises, understand the truth of His promises, and have an understanding of the nature and ability of God, likely trust in God's promises and are committed to doing His will as a result.
This mindset is demonstrated in scripture in Genesis 24:1-9. In this portion of scripture, the Bible explains that Abraham was getting old(er). While it is true that Abraham was "as good as dead" when Isaac was born (100 years old), the testimony of Sarah's death explains that at least 37 years had elapsed into Isaac's life, meaning that Abraham was at least 137 years old. Abraham was old! Thus, as the scriptures identify Abraham's age, they are also helpful to identify Abraham's focus in his old age. The Bible explains that Abraham was concerned for Isaac and his future to ensure that his life continued in obedience to the Lord so that God would fulfill the promises made to him, through Isaac.
Genesis 24:1-9 explains that Abraham made an oath with one of his servants. In the 60+ years that Abraham had been walking with the Lord, the Bible explains that God had really blessed Abraham so that Abraham was wealthy and had servants. Abraham called one of those servants and asked the servant to ensure a few things with Isaac since Abraham was unable due to his age. The Bible explains that Abraham was concerned for Isaac's future wife. Trusting that God would give Isaac many children, or at least enough children to fulfill the promise that God made to him, Abraham wanted to make sure that Isaac had a wife that would facilitate the will of God concerning His promises - not hinder God's will. Thus, Abraham asked his servant to go find a wife for Isaac, not in Canaan where they were living, but back in Haran where Abraham was from. Abraham wanted to ensure that Isaac married a woman that was of his own people, not a woman from Canaan.
As Abraham communicated these things to his servant, the servant expressed a fair amount of concern. The servant asked, "What if the woman is unwilling to move and come all the way back to Canaan?" This is a reasonable question. Abraham was asking the servant to find some strange woman, and somehow convince her to travel back with him for the purpose of marrying Isaac - a man that she would not have seen or met, in order to live in a new foreign place. This is a tough request to put on someone. Nevertheless, Abraham didn't place his confidence in the opportunity that the circumstances might present. Abraham placed his confidence that all things would work out in the Lord.
When the servant asked Abraham this logical question, Abraham replied with a powerful answer that demonstrated his desire to have God's will done, as well as his confidence in God's ability to fulfill His promises. Abraham told his servant that the Lord God would send an angel to go before the servant and make whatever preparations were necessary to ensure all things worked out. Abraham believed that God would appoint an angel to go before the servant into Haran and speak to the woman that Isaac was supposed to marry so that when the servant was led to her by God, there would be peace in the request to go back to Isaac in Canaan, and the woman would be willing. Genesis 24:1-9 explains that Abraham believed God would do this because he trusted that God would fulfill His promises through Isaac. Abraham was so confident in God's faithfulness, willingness, and ability, that he told the servant, that if the woman would not come back with him to Isaac, that he would be released from his oath. In other words, Abraham knew what God would do, and that God would make it so that Isaac's future wife would agree to the unusual circumstances to facilitate the fulfillment of God's promises.
This testimony is powerful on a few different fronts. First, it is amazing to see Abraham's commitment and focus on doing the Lord's will. Though he is old and dying, he is making efforts to facility God's will concerning God's promises. Abraham was not concerned about his own comfort and satisfaction, but was more concerned about the future wife of Isaac and Isaac's home to make sure God's will was done. When the servant asked if it was okay that Isaac move to Haran (just in case the woman was unwilling to go back to Canaan), Abraham said, "Absolutely not!" Abraham knew that God would give Isaac the land. Abraham knew that God would make Isaac a great nation. Thus, before Abraham died, he made efforts to ensure that his son was in position according to God's will to be the beneficiary of God's promises.
The second amazing thing to see is Abraham's confidence in the Lord. It is true that Abraham had a special and unique relationship with God. He had been walking with the Lord for over 60 years and had seen the Lord do some amazing things in his time as the heir to God's promises. Therefore, Abraham had a mature understanding of who God was, what He was able and willing to do, and knew when God would exercise His power to fulfill His promises. The scriptures say that Abraham was a friend of God. Abraham's confidence in the Lord demonstrates his understanding of the nature of the Lord as one would know a friend. Abraham figured that God would make the necessary arrangements and take care of the uncertain details of finding Isaac's wife and bringing her back to Isaac. Abraham figure that if the task was too large for his servant, God would provide divine help. Abraham had seen God do these types of things for half of his old life. In the mind of Abraham, there was no way that God would stop doing those things since he knew God would be faithful to fulfill His promises.
The scriptures are clear to show Abraham had great focus and hope in God's promises - even in old age. Abraham was less focused on himself, and more focused on ensuring that God's will was done. The testimony of Abraham allows one to understand how his faith and relationship with the Lord was so developed. Abraham listed for the voice of God and responded to it in obedience. Abraham trusted in the Word of God so was willing to comply with it regardless of his understanding of God's methods. Abraham was confident in God's power and nature as Yahweh so he trusted in God's promises. Abraham knew that the God of the universe was greater than tiny little Earth so that he looked forward to God's promises being fulfilled in eternity in heaven, instead of this life. Thus, Abraham sought to please God and live life God's way, according to His will, in line with God's promises, trusting in God's provision and ability along the way. Though Abraham was a normal sinful human being that made many mistakes (sometimes the same ones over and over again), he knew God, trusted God, obeyed God, and sought to please God rather than himself. Consequently, the scriptures say that Abraham was a friend of God, was seen as righteous by God, and was blessed by God. This is a good example to copy and follow!