The Holy Souls in purgatory, Angels, and saints adoring Jesus in the Most Holy Sacrament of the Altar. In Purgatory we all will know they will someday be with Jesus.
Revelation 20:6 - "Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years."