Here's an insight I received after taking Holy Communion. It's something pretty obvious. I call it an insight only because it came to me clearly and rather acutely this time.
The Lord God knows everything about me, everything. So if I live the best possible life, remaining pure, obeying him always, and doing everything for his glory, I shall surely be rewarded with seeing him in heaven and more. It is all logical, and true. (To be lost is easy; to be saved is not hard if you know God.)