Psalms 119
I can only answer you in the original Hebrew. In the Hebrew text, the longest verse in the book of Tehillim (Psalms) is Psalms 18:1.
In the King James versionThe shortest verse in the Book of Psalms has just 35 lettersPsa 18:1 I will love thee, O LORD, my strength.
It is Psalm 87:1"His foundation is in the holy mountains."
Depending upon the Bible used, Psalms is the middle book with Psalm 117 as the middle chapter (KJV).
Psalms 119
I can only answer you in the original Hebrew. In the Hebrew text, the longest verse in the book of Tehillim (Psalms) is Psalms 18:1.
In the King James versionThe shortest verse in the Book of Psalms has just 35 lettersPsa 18:1 I will love thee, O LORD, my strength.
Psalms
"Psalm 151" is not included in the typical Protestant Bible, but it's found in some Eastern Orthodox and Catholic versions. In the context of a verse reference, it would be "Psalm 151:6." This specific verse would not be present in the book since the traditional Book of Psalms only includes up to 150 chapters.
The Book of Psalms
It is Psalm 87:1"His foundation is in the holy mountains."
The Book of Psalms is written by David who was a musician. Many of the chapters in Psalms is where we get some of our worship music today.
Depending upon the Bible used, Psalms is the middle book with Psalm 117 as the middle chapter (KJV).
psalms 118:8
It is found in the bible in the Old testament book of Psalms in chapter 139 verse 14.
It depends on context. If you are talking about Psalm 124, you would say "Psalm 124" since it is the name of that particular poem. If you wish to reference the specific verse Psalms 124:18, then you would say "Psalms" since that is the name of the book.