Praise words and chants
From XFamily - Children of God
"Halleljuah" — taken from the Bible, meaning praise God, "Praise the Lord" and "Amen", are oft used expressions, chanted during prayers and used to affirm or cheer on group led prayers or other inspirational group activities.
It is quite common for group members to begin and end their prayers with multiple "Thank you, Jesus! Thank you, Lord!" chants.