when i survey the wondrous cross

"When I Survey the Wondrous Cross" is a hymn written by Isaac Watts and first published in 1707. The hymn is famous for its reflective and worshipful meditation on the crucifixion of Jesus Christ. The opening line, which you asked about, is: "When I survey the wondrous cross
On which the Prince of glory died,
My richest gain I count but loss,
And pour contempt on all my pride." The hymn consists of several verses that explore themes of sacrifice, love, and devotion centered on the cross of Christ. It was originally published in Watts' collection "Hymns and Spiritual Songs" and is considered a classic hymn in Christian worship.