Ezra 6:10

10 so that they may offer sacrifices pleasing to the God of heaven and pray for the well-being of the king and his sons.

Read Ezra 6:10 Using Other Translations

That they may offer sacrifices of sweet savours unto the God of heaven, and pray for the life of the king, and of his sons.
that they may offer pleasing sacrifices to the God of heaven and pray for the life of the king and his sons.
Then they will be able to offer acceptable sacrifices to the God of heaven and pray for the welfare of the king and his sons.