God wants us to bring our petitions to Him – regardless of their size and scope. Sometimes, like with Isaac, He answers immediately; sometimes He delays until the timing is perfect; sometimes He responds by not responding. Regardless, our joyful task is to bring our needs to Him daily and to regularly seek His will.
Genuine, authentic faith must be definite and free of doubt. Not simply general in character; not a mere belief in the being, goodness, and power of God, but a faith which believes that the things which He says will come to pass. As faith is specific, so the answer likewise will be definite. Faith and prayer select the things, and God commits Himself to do the very things which faith and persevering prayer nominate, and petition Him to accomplish. (Adapted from E.M. Bounds, The Necessity of Prayer)
Many scholars view this verse as the first in Scripture to mention prayer. More accurately it is the first example of people collectively worshiping their Creator. At this early stage in human history, men and women were already divided according to their faithfulness to God. Nothing has changed in the ensuing millennia – offering up daily prayers is a witness and demonstration of devotion to the Lord.