'Servant's' in the Bible

Let those who want my vindicationshout for joy and be glad;let them continually say,“The Lord be exalted.He takes pleasure in His servant’s well-being.”

Bring joy to Your servant’s life,because I turn to You, Lord.

Guarantee Your servant’s well-being;do not let the arrogant oppress me.

Like a servant’s eyes on his master’s hand,like a servant girl’s eyes on her mistress’s hand,so our eyes are on the Lord our Goduntil He shows us favor.