I always say to Strict Baptist brethren who think it a dreadful thing for baptized believers to commune with the unbaptized:  'But you cannot help it; if you are the people of God you must commune with all the saints, baptized or not.  You may deny them the outward and visible sign, but you cannot keep them from the inward spiritual grace.'  If a man be a child of God, I do not care what I may think about him -- if he be a child of God I do commune with him and I must.