I pray the Lord will grant you time for consideration of this so weighty a topic and at such a time as this.
May the Lord bless you with clarity as you weigh out all that is necessary as a man, for it is a day that calls for men of God to stand up for God. Every blessing in Christ as you endeavor to do His will walking in the whole counsel of God.

I will say there is a time for every purpose under heaven. Church history is replete with what Christ's little flock did in times of persecution. But greater still is what Christ did to uphold them in creation and providence whether in life or death.

To answer your question in part. I sing only Psalms that are translated from the Hebrew, accapella and reject all else in the worship of God. Though I might quote something that represents truth to encourage another, I refrain at a time so hostile to the hymnal in Scripture.

What you refer to here as a hymn is what is referred to as the ol'100th and is Psalm 100 in the Scottish Metrical Psalter LM First Version - this version was retained from the 1562 English and 1564 Scottish Psalters. It is by William Kethe.
See - http://www.thepsalmssung.org/scottish/
In essence it is a metrical translation of the original Hebrew so it can be sung in the native tongue of the people singing it. Psalm 100 KJV or 1650 Scottish Metrical Psalter are both translations from the Hebrew

You quote Hebrews 13:15 Heb 13:15 "By him (the Spirit of Christ)therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name" You give examples, yet in every case these were fallible men and women declared holy in Christ, moved by the Holy Spirit. Personal experience Yes, uninspired, No.

The eighth is of the seven and goeth into perdition.
Rev 17:9 And here is the mind which hath wisdom. The seven heads are seven mountains, on which the woman sitteth.
Rev 17:10 And there are seven kings: five are fallen, and one is, and the other is not yet come; and when he cometh, he must continue a short space.
Rev 17:11 And the beast that was, and is not, even he is the eighth, and is of the seven, and goeth into perdition.
Rev 17:12 And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.
Rev 17:13 These have one mind, and shall give their power and strength unto the beast.
Rev 17:14 These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are calle

I'm just finishing up a sermon also
it addresses B.McC's fire comment and other arguments better than I can http://www.sermonaudio.com/playpopup.asp?SID=1012151234461

*not of human construction*

See Matthew 12:25-26
v.26 And if Satan cast out Satan, he is divided against himself; how shall then his kingdom stand?

The Lord's 'hymn' the Hallel, was from the inspired Book.

A number of good points have been made, that brings balance to the discussion. Sin in all its various presentations is the real culprit. Sin puts everything on its head. Up is down and down is up. The Lord heard my prayer request, mentioned here this morning, in part. I had opportunity to minister as a nurse to a woman treated as if she was in the military in her 60's. Yet the tough life in this area calls for women doing men's work because the men have been struck with a variety of afflictions and diseases. It is necessary for survival. This woman tore a ligament in her knee. Yet she is responsible like many of us for wood sufficient for NE winters. She did it bringing in wood in the dark. The Lord granted me a time to help her when the one she helps distanced himself in her need. Please pray for this woman her need for Christ is the greatest but her life is beyond hard. That the Lord would grant her physical & spiritual help, and use it for her large families good, they are all very needy. The (-)results of unlawful war is relative.

The text of the 1650 Psalter was originally the work of Francis Rous, who completed his text around 1644. But before the text was finally approved for use in the Scottish church, it was subjected to six years of scrutiny and revision by two different groups of highly learned and devout leaders of the church. Literally every word and phrase was carefully weighed for faithfulness to the original Hebrew texts.
The work that resulted from these revisions contained only a small part of Rouse's original text. Instead, what emerged was a composite of the work of the review committees plus lines taken fthe name is shortened to just "The Scottish Psalter." This Psalter has been in continuous use since its initial publication, and has remained unaltered,”

Psa 22:22 I will declare thy name unto my brethren: in the midst of the congregation will I praise thee.
Psa 22:23 Ye that fear the LORD, praise him; all ye the seed of Jacob, glorify him; and fear him, all ye the seed of Israel.
Psa 22:24 For he hath not despised nor abhorred the affliction of the afflicted; neither hath he hid his face from him; but when he cried unto him, he heard.
Psa 22:25 My praise shall be of thee in the great congregation: I will pay my vows before them that fear him.
Psa 22:26 The meek shall eat and be satisfied: they shall praise the LORD that seek him: your heart shall live for ever.

I encourage all to at least read and consider; it is the time in which we live as you will see.

Pray for my Village once referred to as H--l's Kitchen, that it would be called Heavens Kitchen one day. Pray for my town many of the elderly are in great straights and they're the strength of the Community, there is much sickness among them. Pray God to send us a Ministry!

Psa 147:18 He sendeth out his word, and melteth them: he causeth his wind to blow, and the waters flow.
Psa 147:19 He sheweth his word unto Jacob, his statutes and his judgments unto Israel.
Psa 147:20 He hath not dealt so with any nation: and as for his judgments, they have not known them. Praise ye the LORD.

Phil. 3:9,10 came to mind here: Phil. 3:9-11 And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith: That I may know him, and the 'power of his resurrection', Rom.8:13 and the fellowship of his sufferings, being made conformable unto his death; If by any means I might attain unto the resurrection of the dead. to the end

I read your post and finished reading Rev. 16:18-21; compare Rev. 11:14-19
Rev 11:18 And the nations were angry, and thy wrath is come, and the time of the 'dead', (see Rev. 20:4-5*) that they should be judged, and that thou shouldest give reward unto thy servants the prophets, and to the saints, and them that fear thy name, small and great; and shouldest destroy them which destroy the earth. Rev 11:19 And the temple of God was opened in heaven, and there was seen in his temple the ark of his testament: and there were lightnings, and voices, and 'thunderings', and an 'earthquake', and 'great hail'.