To be in limbo means nothing is happening, neither good nor bad.
Because the Christian church believed that only those “born again” could enter heaven they needed an afterlife destination for the other good souls.
Limbo is the rim of hell and the destination for the righteous who died before the coming of Christ as well as infants, unbelievers, and the unbaptized.
Limbo is a place without glory or pain.
We say that someone going nowhere is in “limbo”.