This is a line in the hymn "Gather Us In", written by George Matheson (1842 - 1906) and published in 'Sacred Songs' (1890). The music it is sung to is Penitentia, by Edward Dearle (1874). The hymn refers to the biblical passage: "Many shall come from the east and west, and shall sit down with Abraham, and Isaac, and Jacob, in the kingdom of heaven." (Matthew 8:11)
Gather Us In
Gather us in, thou love that fillest all;
Gather our rival faiths within thy fold.
Rend each man’s temple-veil and bid it fall,
That we may know that thou hast been of old.
Gather us in— we worship only Thee;
In varied names we stretch a common hand;
In diverse forms a common soul we see;
In many ships we seek one spirit land.<be />
Thine is the mystic life great India craves;
Thine is the Parsee’s sin-destroying beam;
Thine is the Buddhist’s rest from tossing waves;
Thine is the empire of vast China’s dream.
Thine is the Roman’s strength without his pride;
Thine is the Greek’s glad world without its graves;
Thine is Judea’s law with love beside,
The truth that censures and the grace that saves.
Each sees one colour of thy rainbow light,
Each looks upon one tint and calls it heaven;
Thou art the fulness of our partial sight;
We are not perfect till we find the seven.
Some seek a Father in the heavens above,
Some ask a human image to adore,
Some crave a Spirit vast as life and love;
Within thy mansions we have all and more.