In response to God's unremitting graciousness to man, His reduction of Himself to enable man to grow freely, man should abandon all else and hold fast to whatever he knows of Divine reality.
Nothing should prevent him from devoting himself to God.
Neither body nor soul, neither inner nor outer forces should interfere with his acts of gratitude to God.
Even one's spouse and children, money and honor should be regarded as having no value in themselves, compared to that which is God.
–Rabbi Adin Steinsaltz
From "Man as the Purpose of Creation" in The Long Shorter Way by Rabbi Adin Steinsaltz