Why dont you follow God's law and keep his Sabbath?
God's Sabbath is a commemoration of creation & the Creator once a week.
Exo 31:17 It is a sign between me and the children of Israel for ever: for in six days the LORD made heaven and earth, and on the seventh day he rested, and was refreshed.
1 John 2:4 He that says, I know him, and keeps not his commandments, is a liar, and the truth is not in him.
Maybe you have not studied the issue? This is a good website for that..
Your babble does not answer my question: what Bible are you reading that says "only 7th-day Sabbath keepers are actually saved, with the seal of God who keep the 10C law."