Here are links to a few posts that illustrate this serious problem of assurance for Calvinist Theology:
Perseverance of the Saints Part 13: Salvation Assurance
An Important Admission on Salvation Assurance From Prominent Calvinist C. Michael Patton
A Telling and Ironic Tweet by John Piper on “Waking up in The Morning” as a Believer
Does Erwin Lutzer Offer False Hope to Calvinist Parents?
The Five Dilemmas of Calvinism Part 3: Who’s Really Holding the Daisy?
[This post was taken from Ben Henshaw’s website. Here is a link to that original post and comments.]