Doubt #5 Salvation can only come through works

It is interesting Religion demands works for salvation but never says how much works is enough.  The Bible show Abraham was justified by believing Genesis 15:6 "And he believed in the L_RD; and he counted it to him for righteousness."  The Bible shows believers are blessed Psalm 2:11,12 "Serve the L_RD with fear and rejoice with trembling.  Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little, Blessed are all they that put their trust in him."