We limit not the truth of God
To our poor reach of mind,
By notions of our day and sect,
Crude, partial and confined.
Now let a new and better hope
Within our hearts be stirred:
The Lord hath yet more light and truth
To break forth from His Word.

Who dares to bind by his dull sense
The oracles of heaven,
For all the nations, tongues and climes
And all the ages given!
The universe how much unknown!
That ocean unexplored!
The Lord hath yet more light and truth
To break forth from His Word.

Darkling our great forefathers went
The first steps of the way;
’Twas but the dawning yet to grow
Into the perfect day;
And grow it shall, our glorious Sun
More fervid rays afford:
The Lord hath yet more light and truth
To break forth from His Word.

The valleys past, ascending still,
Our souls would higher climb,
And look down from supernal heights,
On all the bygone times;
Upward we press, the air is clear,
And the sphere-music heard!
The Lord hath yet more light and truth
To break forth from His Word.

O Father, Son and Spirit, send
Us increase from above;
Enlarge, expand all Christian hearts
To comprehend Thy love;
And make us all go on to know
With nobler powers conferred:
The Lord hath yet more light and truth
To break forth from His Word.

George Rawson

1853 Leeds Hymn Book

Inspired from the Address to the Pilgrims by Pastor Robinson.  Here is an excerpt: 

" He charged us before God, and His blessed angels, if God should reveal anything to us by any other instrument of His, to be as ready to receive it as any truth by his ministry; for he was very confident the Lord had more light and truth yet to break forth out of His holy word." 

"And righteousness and truth will I cause to sweep the earth as with a flood, to gather out mine own elect from the four quarters of the earth, unto a place which I shall prepare; an holy city, that my people may gird up their loins, and be looking forth for the time of my coming; for there shall be my tabernacle, and it shall be called Zion; a New Jerusalem." Genesis 7:70