Looking for what is probably a really old song that our family used to sing. I do not know what the title really is, but think it is " can't heaven wait til later on" and have no idea who sings it... I would really appreciate it if someone could help on either the title or the artist.. Thank you.

Some of the words are

Please God don't take my mommy from me
Can't heaven wait until later on?
She's the only one I have to live for
Can't heaven wait until later on?