Revelation of Christ to St. Gertrude the great

I found this on one thread (not this website) ‘For each Mass we hear with devotion, Our Lord sends a saint to comfort us at death.’(revelation of Christ to St. Gertrude the great). Is this true ??

We, I suppose, will all find out after we die. Though I think we should be more interested, more enthusiastic about our Lord, how comes to us each and every time we receive him in the Eucharist. If only we would believe we would be given such graces.

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