The brothers are still bowed to the ground before Joseph and speaking to him from that low position. There is no bravado about them anymore.
The one seeking the Lord may not at first come with a truly sincere heart. There may be all sorts of wiles with which we try to come into the kingdom of heaven. But Christ sees every one of them, and will not let us enter until we abandon them all. We cannot come to him until we seek him with all our hearts. His way of dealing with us, may look very similar to the way Joseph dealt with his brothers. There will be hold ups and delays, apparent successes and then severe disappointments. If I am trying to get onto the road to heaven and I cling to the idols of music or worldly entertainment, Christ will not hear me. He will not take away my guilt until I have really repented.