It may be that originally its purpose was nearer to that of the Hid Treasure and Pearl, i.e. it was concerned to stress
the joyful response to the finding of a hid treasure, a pearl or a lost valuable, and that it is the element of something lost in it which brought it together with the Lost Sheep in the tradition.
Hannah's song, inspiring Mary's Magnificat, is
a joyful response to the redemptive miracle of Samuel's birth.
The observance of the Law is
a joyful response to a God who has shown mercy.
Conversion («giving oneself up to God» or accepting Jesus Christ as personal savior) is understood as
a joyful response to God's love, which can be expressed in healing.
I didn't anticipate such
a joyful response from you all.
Showing any feline love and affection will be met with
a joyful response.
You are making lifetime memories and your positive and
joyful response to these will serve you well as you serve God and others!