We are to be obedient to God. But, just like kids with earthly parents, we don't seem to be able to do it all the time. We fail to spend the time with Him in prayer and studying of His Word like He has told us to. We fail to keep all of His commandments*. We fail Him in so many ways. Yet, He still loves us like an earthly father loves his children even when they disappoint him. God's love is something we can never loss - even if we are disobedient. He may call us home to heaven, but He will never stop loving us!
*We are no longer under the Law of the Old Testament, but Christ did repeat all but one of the Ten Commandments - all but the Sabbath Law. Therefore, we are to keep these.