'Acceptable' in the Bible

Thus saith the LORD, In an acceptable time have I heard thee, and in a day of salvation have I helped thee: and I will preserve thee, and give thee for a covenant of the people, to establish the earth, to cause to inherit the desolate heritages;

I will bring them to My holy mountainand let them rejoice in My house of prayer.Their burnt offerings and sacrificeswill be acceptable on My altar,for My house will be called a house of prayerfor all nations.”

Is it such a fast that I have chosen? a day for a man to afflict his soul? is it to bow down his head as a bulrush, and to spread sackcloth and ashes under him? wilt thou call this a fast, and an acceptable day to the LORD?

All the flocks of Kedar will be gathered to you;the rams of Nebaioth will serve youand go up on My altar as an acceptable sacrifice.I will glorify My beautiful house.

To proclaim the acceptable year of the LORD, and the day of vengeance of our God; to comfort all that mourn;