You may say that there are many errors and superstitions in another religion. I should reply: Suppose there are. Every religion has errors. Everyone thinks that his watch alone gives the correct time. It is enough to have yearning for God. It is enough to love Him and feel attracted to Him. Don’t you know that God is the Inner Guide? He sees the longing of our heart and the yearning of our soul. Suppose a man has several sons. The older boys address him distinctly as ‘Baba’ or ‘Papa’, but he babies can at best call him ‘Ba’ or ‘Pa’. Now, will the father be angry with those who address him in this indistinct way? The father knows that they too are calling him, only they cannot pronounce his name well. All children are the same to the father. Likewise, the devotees call on God alone, though by different names. They call on one Person only. God is one, but His names are many.
(p.112, The Gospel of Sri Ramakrishna)
Without His grace one becomes averse to His name, finds no taste for it, and all talk about God becomes unbearable. The Lord’s grace is already on him in whose mind thoughts about God arise spontaneously. There is nothing like higher or lower as between God without form and with form. Everything is He.
(p.338, Spiritual Talks, Swami Shivananda)