Why do people "ADD" (Rev 22:18) another baptism and say "It's not salvation" when God said "Dead works" (Heb 9:14) which resists His blood?

What are you all doing? Don't you know that you're "ADDING" to the Word of God and Revelation 22:18 says "For I testify unto every man that heareth the words of the prophecy of this book, If any man shall ADD unto these things, GOD shall ADD unto him the plagues that are written in this book?" What is wrong with you? Ephesians 4:5 says "one baptism" but you've "ADDED" another and say "It's not necessary for salvation?" GOD SAID in Hebrews 9:14 "How much more shall THE BLOOD OF CHRIST, who through the eternal Spirit offered Himself without spot to GOD, PURGE your conscience from DEAD WORKS to serve the living GOD?" What are you all doing? "Ye have not yet resisted to THE BLOOD, striving against sin" (Hebrews 12:4). "...THE BLOOD OF JESUS CHRIST HIS SON CLEANSETH US FROM ALL SIN" (I JOHN 1:7). What is wrong with you people???