whom have i

Whom have I in heaven but you?
And there is nothing on earth that I desire besides you.
My flesh and my heart may fail,
but God is the strength of my heart and my portion forever.

~ A Psalm of Asaph (Psa 73.25-26)

John Piper writes of John 6.35:

The glory of bread is that it satisfies. The glory of living water is that it quenches thirst. We do not honor the refreshing, self-replenishing, pure water of a mountain spring by lugging buckets of water up the path to make our contributions from the ponds below. We honor the spring by feeling thirsty, getting down on our knees, and drinking with joy. Then we say, “Ahhhh!” (that’s worship!), and we go on our journey in the strength of the fountain (that’s service). The mountain spring is glorified most when we are most satisfied with its water.

... Being satisfied in God is not an optional add-on to the real stuff of Christian duty. It is the most basic demand of all. “Delight yourself in the LORD” (Psalm 37:4) is not a suggestion, but a command. So are: “Serve the LORD with gladness” (Psalm 100:2), and, “Rejoice in the Lord always” (Philippians 4:4).

Psalm 16.2, "You are my Lord; I have no good besides you."

This is the essence of what it means to love God—to be satisfied in him. In him! Loving God may include obeying all his commands; it may include believing all his Word; it may include thanking him for all his gifts; but the essence of loving God is enjoying all he is. It is this enjoyment of God that glorifies his worth most fully, especially when all around our soul gives way.