Even if the Bible were true it is incredibly ambiguous. Maybe one day when we have vastly increased our knowledge of the universe we will find that everything aligns perfectly with the Bible (although that would already take a monumental upheaval of fundamental physics) but the Bible wont have helped us to get there and it wont have given us anything other than vague metaphors and dogma to retard the minds of millions.
Even if Jesus truly were our saviour this still does no good for humanity. He provided no knowledge of technology to cure disease, enable the disabled, enhance communication or explore and examine the universe. People live terrible lives: thousands of children die every day of disease and starvation, the disabled are invalids excluded from society, the poor have no access to education and healthcare. And what does Jesus do?
Even if every claim made by Christianity were true: if every miracle were a reality; if Jesus healed the sick and cured the blind; if Lourdes and every other holy site were truly places of miraculous healing; if every prayer spoken that came before a blessing truly WAS answered by God, then we would still need science. We would still need to study the universe and create technology because there are still billions of people whom God allows to suffer, live in isolation and die needlessly. But through science they can be healed and heard.
Science enables us to end suffering, bring about peace, change and justice. We must endeavour to achieve all these things and not wait for the approval of the same God that would so readily deny us of them.