Living creatures

as represented by Ezekiel (1-10) and John (Rev. 4, etc.), are
the cherubim. They are distinguished from angels (Rev. 15:7);
they join the elders in the "new song" (5:8, 9); they warn of
danger from divine justice (Isa. 6:3-5), and deliver the
commission to those who execute it (Ezek. 10:2, 7); they
associate with the elders in their sympathy with the hundred and
forty-four thousand who sing the new song (Rev. 14:3), and with
the Church in the overthrow of her enemies (19:4).

They are supposed to represent mercy, as distinguished from
justice, mercy in its various instrumentalities, and especially
as connected with the throne of God, the "throne of grace."