I have only sung this hymn of Charles Wesley’s once, to a lovely 18th century tune called ‘David’s Harp’. You will find both words and tune in the old English Hymnal at number 378. It is a fine and moving meditation on Genesis 32:22-32.
Come, O thou Traveller unknown, Whom still I hold, but cannot see! My company before is gone, And I am left alone with Thee; With Thee all night I mean to stay, And wrestle till the break of day.
I need not tell Thee who I am, My misery and sin declare; Thyself hast called me by my name, Look on Thy hands, and read it there; But who, I ask Thee, who art Thou? Tell me Thy name, and tell me now.
Yield to me now, for I am weak, But confident in self-despair; Speak to my heart, in blessings speak, Be conquered by my instant prayer; Speak, or Thou never hence shalt move, And tell me if Thy Name is Love.
’Tis Love! ’tis Love! Thou diedst for me! I hear Thy whisper in my heart; The morning breaks, the shadows flee, Pure, universal love Thou art To me, to all, Thy mercies move; Thy nature and Thy Name is Love.
I have taken the selection of these four verses as in the English Hymnal, and also used their change in the last line. If you are interested you can easily find the whole poem (including the last line!) on the internet.