Isaac was the light of Abraham’s life. On the way up the mountain he sacrificed his opinions, his desires, his will, and his future to the glory of God.
So, Abraham bound Isaac and placed him on the altar. Raising a knife, he fully intended to sacrifice his son to the Lord, believing God’s promise to bless his generations. Then God intervened and provided a ram in the place of Isaac. Abraham believed and Isaac lived.
God will honor those who honor Him through worship. When we are willing to sacrifice on the altar all that we have and are, He will respond by blessing us and using us for His glory.
Praying, reading the Bible, tithing, witnessing, faithfulness to the house of God---things we ought to be doing anyway---are all acts of worship when they are done out of a heart of love and humble submission to God.