the reason you claim the bible has contradictions is that you really do not understand it
if you think you can get salvation by doing good works you are wrong you stay under the law
the is only one way to be saved and that is by faith and obedience
then you are pardoned ( justified) by gods grace
nothing of your self all done by god alone
read galatians 2:16 but preferably all of galatians 2
much of it you wont understand but it may stop you from
blaspheming and stirring up gods anger against you
