because in the bible we read...

Psalms 98:4

Make a joyful noise unto the Lord...and sing praise

Epheshians 5:19

Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord.

because in the bible we read...

Psalms 134:2

Lift up your hands in the sanctuary, and bless the Lord.

Psalms 100:4

Enter into his gates with thanksgiving, and into his courts with praise...

1 Timothy 2:8

I will therefore that all men pray everywhere, lifting up holy hands...

because in the bible we read...

Acts 4:24

...they lifted up their voice to God with one accord..

Matthew 18:20

For where two or three are gathered together in my name, there am I in the midst of them.

because in the bible we read...

Luke 12:8

...Whosoever shall confess me before men, him shall the Son of man also confess before the angels of God.