In Rev 8:3 The Angel offers ALL the prayers of the Saints, this includes all prayers prayed during the Half hour along with the prayers  of the Four Beast, the prayer of the               24 Elders (New & Old Testament) .

This Angel is in Glory at the golden altar which was before the throne. This is Not Jesus because Jesus never took on the nature of angels Heb2:16.

This is an Angel in the function of an High Priest;  the only Angel that function as a High Priest in the Bible is Melchizedek