WHY DO WE SING HYMNS AND CHORUSES?

Speaking to yourselves in psalms and hymns and spiritual songs,
singing and making melody in your heart to the Lord; (Ephesians 5:19)

Let the word of Christ dwell in you richly in all wisdom;
teaching and admonishing one another in psalms and hymns
and spiritual songs, singing with grace in your hearts to the Lord. (Colossians 3:16)

WHY DO WE PRAY TOGETHER?

Again I say unto you,
That if two of you shall agree on earth
as touching any thing that they shall ask,
it shall be done for them of my Father which is in heaven. (Matthew 18:19)

And the whole multitude of the people were praying without at the time of incense. (Luke 1:10)

And when they heard that, they lifted up their voice to God
with one accord, and said, Lord, thou art God,
which hast made heaven, and earth, and the sea, and all that in them is: (Acts 4:24)

WHY DO WE PRAY ALOUD?

My voice shalt thou hear in the morning, O Lord;
in the morning will I direct my prayer unto thee, and will look up. (Psalm 5:3)

Evening, and morning, and at noon, will I pray, and cry aloud: and he shall hear my voice. (Psalm 55:17)

WHY ARE MUSICAL INSTRUMENTS A PART OF OUR WORSHIP?

Praise him with the sound of the trumpet: praise him with the psaltery and harp.
Praise him with the timbrel and dance: praise him with stringed instruments and organs.
Praise him upon the loud cymbals: praise him upon the high sounding cymbals.
(Psalms 150: 3-5)

And I heard a voice from heaven, as the voice of many waters,
and as the voice of a great thunder:
and I heard the voice of harpers harping with their harps: (Revelation 14:2)

WHY DO WE HAVE SPEAKING IN TONGUES AND INTERPRETATION OF THOSE TONGUES?

Wherefore, brethren, covet to prophesy, and forbid not to speak with tongues. (1 Corinthians 14:39)

To another the working of miracles; to another prophecy;
to another discerning of spirits; to another divers kinds of tongues;
to another the interpretation of tongues: (1 Corinthians 12:10)

How is it then, brethren?
when ye come together,...every one of you hath a revelation,
hath an interpretation. Let all things be done unto edifying.
If any man speak in an unknown tongue, let it be by two, or at the most by three,
and that by course; and let one interpret. ( 1 Corinthians 14: 26,27)

WHY DO WE WEEP AT TIMES IN WORSHIP?

He that goeth forth and weepeth, bearing precious seed,
shall doubtless come again with rejoicing, bringing his sheaves with him. (Psalm 126:6)

A time to weep, and a time to laugh, a time to mourn, and a time to dance; (Ecclesiastes 3:4)

Let the priests, the ministers of the LORD, weep between the porch and the altar,
and let them say, Spare thy people, O LORD, and give not thine heritage to reproach,
that the heathen should rule over them: wherefore should they say among the people,
Where is their God? (Joel 2:17)

Blessed are ye that hunger now: for ye shall be filled.
Blessed are ye that weep now: for ye shall laugh.
(Luke 6:21)

Rejoice with them that do rejoice, and weep with them that weep. (Romans 12:15)