Baptism "in Jesus name only" is not a formal for salvation, as was clearly explained to you in the CARM link, but apparently, you are not interested in the truth but are only interested in accommodating your biased church doctrine. In James 2:14, we read of one who
says/claims he has faith but has
no works (to evidence his claim). That is not genuine faith, but a
bare profession of faith. So when James asks, "Can
that faith save him?" he is saying nothing against genuine faith, but only against an
empty profession of faith/dead faith. *So James
does not teach that we are saved "by" works. His concern is to
show the reality of the faith professed by the individual (James 2:18) and demonstrate that the faith claimed (James 2:14) by the individual is genuine. Simple!
In James 2:19, we see that the demons believe "mental assent" that "there is one God" but they
do not believe/entrust their spiritual well being to Christ; have faith/reliance upon Christ for salvation. In other words, they
do not believe on the Lord Jesus Christ (Acts 16:31)
and are not saved. Their trust and reliance is in Satan, as demonstrated by their rebellion in heaven and continuous evil works.
In James 2:20, "faith without works is dead" does not mean that faith is dead until it produces works and then it becomes a living faith or that works are the source of life in faith or that we are saved by works. James is simply saying
faith that is not accompanied by evidential works is dead. If someone
says-claims he has faith but
lacks resulting evidential works, then he has an
empty profession of faith/dead faith and not authentic faith.
In James 2:21, notice closely that James does not say that Abraham's work of offering up Isaac resulted in God's accounting Abraham as righteous. The accounting of Abraham's faith as righteousness was made in Genesis 15:6,
many years before his work of offering up Isaac recorded in Genesis 22. The work of Abraham did not have some kind of intrinsic merit to account him as righteous, but it
showed or manifested the genuineness of his faith. This is the "sense" in which Abraham was "justified by works." He was
shown to be righteous.
In James 2:22, faith made perfect or complete by works means
bring to maturity, carry to the end, to complete like love in 1 John 4:18. It doesn't mean that Abraham was finally saved based on merits of his works after he offered up Isaac on the altar in Genesis 22. When Abraham performed the good work in Genesis 22; he
fulfilled the expectations created by the pronouncement of his faith in Genesis 15:6.
You need to remember that James is discussing the
evidence of faith (
says-claims to have faith but has no works/I will show you my faith by my works - James 2:14-18),
not the initial act of being accounted as righteous with God (Romans 4:2-3).