Trying to define the ICC is like trying to define any congregational church. One of the truths pushed by the Campbell's was that there are DISPENSATIONAL DISTINCTIONS. While the church fathers understood the truth, many groups developed using the whole New and Old Testament for its patternism or "acts" of worship. This is a result of a historic pattern of lifting isolated "commands, examples and inferences" without caring about the context or story line.
Most if not all efforts to defend instruments in any of the groups build on the foundation of the Scribes who recorded the events of the Monarchy when abandoned "to worship the starry host." A church of Christ preacher:
The first two reasons assert that under the Old Testament, God did not just allow instrumental music, He commanded and blessed it. Rick offered the following passages for these contentions: 2 Chronicles 5:13-14; 7:6; 29:25-26; Psalm 33:1- 3; 92:1-3; 150:1-6.
CHRIST IN THE PROPHETS WARNED ABOUT THE LYING PEN OF THE SCRIBES.
Trust ye not in lying words, saying,
The temple of the Lord, The temple of the Lord,
The temple of the Lord, are these. Jeremiah 7:4
Jer. 8:8 How do ye say, We are wise, and the law of the LORD is WITH US?
LO, CERTAINLY IN VAIN MADE HE IT;
THE PEN OF THE SCRIBES IS in vain.
For I spake NOT unto your fathers, nor commanded them
in the day that I brought them out of the land of Egypt,
concerning burnt offerings or sacrifices: Jeremiah 7:22
God did NOT speak through the lying pen of the Scribes who recorded the Monarchy which God had NOT commanded.
Heb. 1:1 God, who at sundry times and in divers manners
spake in time past unto the fathers by the prophet
Heb. 1:2 Hath in these last days spoken unto us BY HIS SON
whom he hath appointed heir of all things,
by whom also he made the worlds;
For those who SAY that God said through the Lying Pen of the Scribes:
Jer 23:17 They say still unto them that despise me,
The Lord hath said, Ye shall have peace;
and they say unto every one that walketh
after the imagination of his own heart,
No evil shall come upon you.
Despise tthe Word of God of God and using your own words is:
Blasphēm-eō , pf. A. “beblasphēmēka