Scriptures and prayers for a dying friend?

When a loved one faces death, are there any scriptures that you use to comfort/ bless their departing? This old bastard is one of the early boomers. He's around 82 and is a true boomer stereotype, some may even call him a wild man. Doing the rounds, visiting people in the neighborhood, seeing if there are any BAR B Q's or a spare beer. Calling me at 6:00AM to go rake up clumps of grass on his lawn.

Its not sure he's going to kick the bucket, but he's diabetic (doesn't stop him from eating his favorite food: pie), and suffered a heart attack/ seizure. He's a "Christian", but im a little worried for him. I will put it to you this way, when/if he goes to heaven they may ask him to go on "time out" for a little while.

So that's why im asking for prayers and scriptures for this boomer! These boomers that turned their backs on God act like they will live for ever. The guy could still easily pack away a pound of beacon for breakfast! Many wait until the eleventh hour to seek God and repent, but they die at 10:45. Hopefully he has made peace with his Creator, we shall see. Ordinarily the end of Revelation that describes Heaven is what I go too, but for sure the bible is teeming with appropriate scripture!

Revelation 21:4 King James Version (KJV)

4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.