In 1896, Van DeVenter was conducting the music of a church event. It was during these meetings that he finally surrendered his desires completely to God -- He made the decision to become a full-time evangelist. As he submitted completely to the will of his Lord, a song was born in his heart.

Van DeVenter said of the inspiration for the text:
For some time, I had strug­gled be­tween de­vel­op­ing my tal­ents in the field of art and go­ing into full-time evan­gel­is­tic work. At last the pi­vot­al hour of my life came, and I sur­ren­dered all. A new day was ushered in­to my life. I became an evang­el­ist and dis­cov­ered down deep in my soul a tal­ent hi­ther­to un­known to me. God had hid­den a song in my heart, and touch­ing a ten­der chord, He caused me to sing.

--en.wikipedia.org