favorable pleasure: what pleases someone, and so the acceptance or favor they grant and the will they choose to carry out
This Hebrew word, ratson, names the pleasure one person takes in another, and it fans out from there into three connected shades. At its root it is the warm approval that makes a thing welcome. When that approval lands on a worshiper's offering, the word means being accepted: the gift is received with pleasure rather than refused. When it describes the steady goodwill a king or God extends, it means favor: the kindly disposition that brings life and blessing. And when it points back to the one who is pleased, it means that person's will: what they have settled on and choose to do because it pleases them.
The three senses are one idea seen from different angles. Acceptance is favor received; favor is pleasure shown; will is pleasure acted upon. The thread running through all of them is delight: ratson is never cold permission but the positive leaning of one heart toward something it finds good.
Because the same word can mean both the favor God shows and the will God enacts, context does the sorting. Worship language (an offering accepted, a prayer received) leans toward acceptance and favor; phrases about doing or acting according to ratson, especially of a king, point to the will.