In Luke 9:24, Jesus gives the identical saying about losing life to save it — a direct parallel within the same Gospel.

In Luke 9:25, Jesus asks what profit to gain the world yet lose oneself — reinforcing the same cost-of-discipleship theme.

In Matthew 10:39, the same saying appears: finding life loses it, losing life for Christ finds it — a Synoptic parallel.

In Matthew 16:25, the same saving/losing life saying recurs in a different context — a direct Synoptic parallel.

In Mark 8:35-37, the same saying appears followed by the profit question — a full parallel teaching across Gospels.

In John 12:25, the same principle is phrased as loving/hating one's life in this world — a Johannine parallel to the Synoptic saying.

In Revelation 2:10, the promise of the crown of life for those faithful unto death echoes the gain of eternal life through losing life.