If anyone accepts that God is greater than everyone and nobody is equal to Him, then we welcome such statement. And if he is sober and intelligent then he will try to learn from Vedic literature how God is greater than everyone and nobody is equal to Him. This knowledge is very clearly defined beginning from the Bhagavad-gita. So if you meet such persons who are staunch Christians you can humbly put this argument before them for consideration. But if somebody is dogmatic and blind follower, then avoid discussing with him. Better spend that time for enlightening a person who is innocent. Do not try to enter into the details of New Testament, but simply say that we agree on the principle that God is great.
Letter to Tosana Krsna, 23 June, 1970