Exodus 15:26 KJV

And said, If thou wilt diligently hearken to the voice of the Lord thy God, and wilt do that which is right in his sight, and wilt give ear to his commandments, and keep all his statutes, I will put none of these diseases upon thee, which I have brought upon the Egyptians: for I am the Lord that healeth thee.

Yes, our God heals us. He heals us now just as He did with Moses and the Hebrew nation. Jesus Christ healed many as He lived among us while carrying out His Father's desires for mankind. Our heavenly Father does not give up on us when we fail to believe Him. He continues to work with our "weak" faith and He promises to strengthen our hearts. Our hearts must be filled with courage and faith in Him.