Entrance Antiphon, Cf. Is 66:10-11:Rejoice, Jerusalem, and all who love her. Be joyful, all who were in mourning; exult and be satisfied at her consoling breast.Today is the halfway mark of Lent. This Sunday is known as Laetare Sunday for the first word of the Introit or Entrance Antiphon laetare (rejoice); it is a Sunday of joy. The celebrant has the option to wear rose colored vestments. This is also the Second Scrutiny in preparation for the baptism of adults at the Easter Vigil.