I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty.@Revelation 1:8
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Susan H. Peterson (1950-2004)

Susan H. Peterson, 1998 (public domain).

Hamburg Lowell Mason, 1824; first appeared in The Boston Handel and Haydn Society Collection of Church Music, third edition, 1825 (🔊 pdf nwc).

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Lowell Mason (1792-1872)

Alpha, Omega, beginning and end,
Who is, who was, and who is yet to come—
May grace and peace now upon us descend
From Father, Spirit, and Christ the Son.

Lord Jesus Christ, First and Last, faithful e’er,
Once You were dead; now You live evermore.
The keys to death and to hell You now bear.
You rule the kings of earth by Your power.

To Him who loves us and shed His own blood—
All of our sins in His body He bore,
Made us a kingdom and priests serving God—
To Him be glory, pow’r evermore!

Look, He is coming! With clouds He’s adorned.
All eyes will see Him when He comes again.
Because of Him, all earth’s peoples will mourn.
So shall it be! Amen and amen.