What should move God to love us?

(Thomas Brooks, "The Transcendent Excellency of
a Believer's Portion above All Earthly Portions")

The free favor and love of God, the good will and pleasure
of God--is the true ground and cause of God's bestowing of
Himself as a portion upon His people. There was no cause,
nor loveliness, nor desirableness in them--which could
move God to bestow Himself upon them.

God, for the glory of His own free grace and love, has bestowed
Himself as a portion upon those who have deserved to have their
portion among devils and damned spirits--in those torments
which are endless, ceaseless, and remediless.

But what should move God to love us, who were so unworthy,
so filthy, so empty, so beggarly? The question may be resolved
in these words--He loves us because He loves us. The root
of all divine love to us, lies only in the bosom of God.