I came across this old hymn flipping through a book yesterday and realized I hadn’t heard it in a long time. It is based on Psalm 100, and an interesting history of it is here. “Old 100th” is also the name of the music by Lou­is Bour­geois.

All people that on earth do dwell,
Sing to the Lord with cheerful voice.
Him serve with fear, His praise forth tell;
Come ye before Him and rejoice.

The Lord, ye know, is God indeed;
Without our aid He did us make;
We are His folk, He doth us feed,
And for His sheep He doth us take.

O enter then His gates with praise;
Approach with joy His courts unto;
Praise, laud, and bless His Name always,
For it is seemly so to do.

For why? the Lord our God is good;
His mercy is for ever sure;
His truth at all times firmly stood,
And shall from age to age endure.

To Father, Son and Holy Ghost,
The God Whom Heaven and earth adore,
From men and from the angel host
Be praise and glory evermore.

~ Wil­liam Kethe