We’re not required to have a relationship with God. But when we make that choice, I believe that it creates a longing in our hearts where we require more of Him. In other words, we need Him.
As the deer pants for the water brooks, so pants my soul for You, O God. My soul thirsts for God, for the living God. When shall I come and appear before God? -Psalm 42:1-2
O God, You are my God; early will I seek You; my soul thirsts for You; my flesh longs for You in a dry and thirsty land where there is no water. -Psalm 63:1
My soul longs, yes, even faints for the courts of the Lord; my heart and my flesh cry out for the living God. -Psalm 84:2
And He delivers:
For He satisfies the longing soul, and fills the hungry soul with goodness. -Psalm 107:9
Blessed are those who hunger and thirst for righteousness, for they shall be filled.
-Matthew 5:6