Abraham’s faith didn’t become any weaker even when he thought about the fact that he was now too old have children (he was about 100 years old) and that Sarah had never been able to have children.
He replied, “You have such little faith! Why are you so afraid?” Then Jesus got up and ordered the winds and the waves to stop, and it became completely calm.
If God dresses the wild grass so well, even though it’s here today and thrown into the fire tomorrow, isn’t he even more likely to make sure that you have clothes? You have such little faith!