“And they all shall be taught by GOD” my study of the WORD related to this.
starting at JOG.91.
1.  and he said it should be taught to the people of Judah; behold, it is written in the Book of Jashar. He said:
 and he said it should be taught to the people of Judah; behold, it is written in the Book of Jashar. He said:
 and said–To teach the sons of Judah the bow. Behold, it is written in the book of Jashar:
II Sam.1 mpt
 (a-)He ordered the Judites to be taught [The Song of the] bow.(-a) It is written in the Book of Jashar.(c)
(a- -a) Meaning of Hebrew uncertain.
(c) See note at Joshua 10.13. (Presumably a collection of war songs.)
This verse will need some additional reading around it for additional understanding.
This is after David has defeated Saul, the first Israelite’s chosen king.
Compare the mpt verse to the other three:
“ordered” v “said”
A forceful command versus guidance.
GOD FIRST COMMANDS us then GOD GUIDES us as we ISRAEL with HIM one on ONE face to FACE.
David, more than wanted them to return to GOD, he wanted them to cling to GOD for LIFE, thus David commanded, ordered, that they be taught !!!!
“Judites” v “Judah”
Again it is important to understand the use of “Judites” as people, more so as individuals, versus “Judah” a group, or congregation. GOD’S way has always been a one on ONE face to FACE process of STRIVING. Why is it that religions of men want to make it about congregations ??? Because GOD knows a person is smart, but a group of people are dumb and will follow along like a herd of sheep led to slaughter by a goat.
Do you have a religious goat leading you ????
1. II Samuel 1.19-27.
2. Do not rejoice over a death of an enemy. GOD does not rejoice in the death of any of HIS children. So to rejoice when GOD does not rejoice is being false to GOD and a violation of HIS 3RD COMMAND, ORDER, LAW !!!!!!!
3. Do we teach ourselves and our neighbors not to rejoice over the death of any child of GOD ????
4. Go and learn what these WORDS of GOD mean, “I DESIRE mercy not sacrifice !!!!”