He put Himself in the bow

The god of love had shot all his arrows, but could never pierce his heart, till at length He put Himself into the bow.

[Henry Scougal, The Life of God in the Soul of Man]

To testify His affection

When all His other gifts could not prevail, He at last made a gift of Himself, to testify His affection and engage theirs.

[Henry Scougal, The Life of God in the Soul of Man]