One of the most common arguments for dressing up at church is the argument that you are supposed to wear the "best you got" to meet the Lord in His house. Recently, I heard it said that the Old Testament laid the foundation for "dressing up" for church because those under the Law were repeatedly instructed to "wash their clothes". Without getting into all of the points of the Law, this is an incorrect application. The Jews were repeatedly told to wash their clothes for uncleanness. A plethora of Scriptures could be offered to prove such (Leviticus 11-15). But this wasn't because of some mandate to "dress up". This was due to their being ceremonially unclean. More could be said here but honestly it shouldn't be necessary. The Law never once paved the way to God. In fact, even ceremonially man never was allowed into God's presence as the curtain between the Holy Place and the Most Holy Place remained no matter how perfectly the Laws were followed.
Todd Bryant is the Lead Elder at Sovereign Grace Baptist Church in Northport, AL. He has pastored there since 1998. For more more information on the church and links to audio sermons and apps for electronic devices, visit www.sovereigngrace.net