Pearly gates

Pearly gates is an informal name for the gateway to Heaven according to some Christian denominations. It is inspired by the description of the New Jerusalem in : "The twelve gates were twelve pearls, each gate made of a single pearl."
The image of the gates in popular culture is a set of large gold, white, or wrought-iron gates in the clouds, guarded by Saint Peter. Those not fit to enter heaven are denied entrance at the gates, and descend into Hell. In some versions of this imagery, Peter looks up the deceased's name in a book, before opening the gate.