New Revised Standard Version
then hear from heaven their prayer and their plea, and maintain their cause.

Contemporary English Version
Answer their prayers from heaven and give them victory.

New American Bible
listen from heaven to their prayer and petition, and uphold their cause.

Douay-Rheims Bible
Then hear thou from heaven their prayers, and their supplications, and revenge them.

Then hear thou from heaven their prayers, and their supplications, and revenge them.

hear thou

Daniel 9:17-19 Now, therefore, O our God, hear the supplication of thy servant, and his prayers: and shew thy face upon thy sanctuary, which is desolate, for thy own sake. . . .

maintain

Isaiah 37:21-36 And Isaiah the son of Amos sent to Ezechias, saying: Thus saith the Lord the God of Israel: For the prayer thou hast made to me concerning Sennacherib the king of the Assyrians: . . .

cause.

Psalm 9:3,4 When my enemy shall be turned back: they shall be weakened, and perish before thy face. . . .

Jeremiah 5:28 They are grown gross and fat: and have most wickedly transgressed my words. They have not judged the cause of the widow, they have not managed the cause of the fatherless, and they have not judged the judgment of the poor.