In his view, to have unbelievers sing songs of praise to God was blasphemy. Because of this stand, in 1811, Henry Grew was rejected by the church.
परंतु, ख्रिश्‍चनांनी जगापासून वेगळे राहावे या तत्त्वाच्या आधारे ग्रू यांना असे ठामपणे वाटत होते की, फक्‍त विश्‍वासू पुरुषांनीच या सगळ्या गोष्टी हाताळाव्यात.