Holy Baptism

“Thus we see what a great and excellent thing Baptism is, which snatches us from the jaws of the devil and makes God our own, overcomes and takes away sin and daily strengthens the new man, always remains until we pass from this present misery to eternal glory. Therefore let everybody regard his Baptism as the daily garment which he is to wear all the time.”    

Large Catechism [Tappert p.446 #83]