I know not why God's wondrous grace (Hymn 333)

Verse 1: I know not why God's wondrous grace To me He hath made known, Nor why, unworthy, Christ in love Redeemed me for His own. Verse 2: I know not how this saving faith To me He did impart, Nor how believing in His word Wrought peace within my heart. Verse 3: I know not how the Spirit moves, Convincing men of sin, Revealing Jesus through the Word, Creating faith in Him. Verse 4: I know not what of good or ill May be reserved for me, Of weary ways or golden days, Before His face I see. Verse 5: I know not when my Lord may come, At night or noon-day fair, Nor if I'll walk the vale with Him, Or "meet Him in the air."