Revelation 6:10

and they cried aloud, "O Sovereign Lord, holy and true, how long wilt thou refrain from charging and avenging our blood upon those who dwell on earth?"

Hebrews 7:25

Hence for all time he is able to save those who approach God through him, as he is always living to intercede on their behalf.

Treasury of Scripture Knowledge

Summary

Then the angel of the LORD answered and said, O LORD of hosts, how long wilt thou not have mercy on Jerusalem and on the cities of Judah, against which thou hast had indignation these threescore and ten years?

The angel

Bible References

The angel

Hebrews 7:25
Hence for all time he is able to save those who approach God through him, as he is always living to intercede on their behalf.

How

Revelation 6:10
and they cried aloud, "O Sovereign Lord, holy and true, how long wilt thou refrain from charging and avenging our blood upon those who dwell on earth?"