Communication is key for any relationship and the quality of the relationship is directly proportional to the quality of communication in the relationship. Through his Word, the Bible. Through his Spirit. Through other people. Through your service.
Communication takes both expression and understanding.
God is committed to you. He says that he will never leave you or forsake you. You should receive a calm assurance from the knowledge of that fact. He is committed to you. For Jesus to be your Lord is for you to be obedient and faithful to him.