Greetings and welcome to the forum,
1. Rom 10:4 uses the same word (Grk: telos) as is found in 1 Pet 1:9. It means goal or aim, not end. 1 Pet 1:9 is not saying "faith" is "done away with" or that this is the "end" of "faith". Yahshua is, in a sense, the "aim" or "goal" of the law since He walked perfectly according to it, Heb 4:15. The Spirit, along with His submission to the Spirit, gave Him the ability to do so. Knowing this about Yahshua, now read Romans 10:5.
Galatians 4:8-11 is addressing pagan worship:
8 "slaves to those which by nature are no elohim (mighty ones)"
9 "the weak and elemental things"
http://www.yaiy.org/literature/DaysMonths.htmlColossians chapter two is speaking of man's laws, specifically Gnostic teachings. The following also addresses Ephesians chapter 2:13-16:
http://www.yaiy.org/literature/Colioss2.htmlYahweh's Sabbath instructions/law remain, Heb 4:9, 11.
2. It looks like the Old Covenant (Old-ness of letter) and New Covenant (New-ness of Spirit) are being spoken of by Paul in verse 6. He clarifies in verses, 7, 12, 13, 14, and 22 that the law is good and working within him via the Spirit of Yahweh, verse 25. "Now we have been discharged from the law" has to be read with "so that we serve in the new way of the Spirit" to be understood. He's speaking of a change from mind-to-heart from flesh-to-Spirit. The Spirit is not against the teachings of the law, but Yahweh is working in the New Covenant with people differently than in the Old Covenant. In the OC (Literally: 1st Agreement) Yahweh expected the people to get the law on their minds first, then into their heart. Since Pentecost the Spirit is now being given within the heart and one then will proceed to get it (the law) on their mind, Heb 10:16.
One is still required to have some basic/fundamental understanding of Yahweh's instructions to be able to repent and receive the Spirit in the first place, Acts 5:32. Therefore, the law remains. Which ones though? Those laws morally and physically applicable to us today. There were, of course, civil laws, ceremonial laws, sacrificial laws, etc. They must be viewed in light of our civil law today and the fact there is no longer a standing Temple, along with the fact there is a change in the law concerning blood sacrifices for those in the Messiah, Yahshua. The Spirit is here to help us move in the right direction, as it is literally moving within us and letting us know when we are getting off track to the right or to the left. The letter and the Spirit will not be out of sync with one another, Ps 119:105; Ezek 36:26-27.
Blessings,
David