“We cannot remain faithful and question God’s own faithfulness. His love for those who are in Christ is beyond question. His character is a constant and his love never fails. He is not loving and gracious toward believers at one moment, only to turn into a malevolent deity the next. He never changes.
In this light, it would be sin to question . . . whether God really loves us, or if He is really faithful to his promises. This is not the questioning worthy of a believer, but of an unbeliever.”
- Albert Mohler, “Is it Legitimate to Question God?“