Faith and hope are both things we have to have on
this earth because this is where we don't know beforehand that we lived with God. That we will return to know, after this life, which is what Paul is meaning, by then I know and then I will know. Meaning then as in the past tense, and then as in the future tense. Like then this will happen, which also explains what he is saying by now I know in part, meaning on this earth. Or knowledge isn't fully received through a glass darkly, but then face-to-face. Faith and hope are what we need to have to conquer all the problems that we occur throughout this life. But after this life we will know. So we won't need to have faith or hot, but we WILL need to have charity. We will need charity forever. So I drew up a little kind of equation for it.
If our eternal journey is represented in the line form, left to right. Now if you were to graph infinity next to that 100 year lifespan, the graph would have to increasingly get bigger as a result. 100 years would eventually get so small you can't see it, which goes back to the scriptures, Life is but a blink of an eye, to our Father in Heaven. We go though a lot of challenges on earth which is why we have our faith or hope. As we learn, from Nephi, we will never get a trial or a problem or a test that we will not be able to achieve or overcome. as represented by the equation y is greater than or equal to X.
You asked about the following:
My companion, Elder Mikels is one of my favorite missionaries that I've had so far. But, Elder Crabb, my zone leader, asked how I would feel about being a leader. I have been a leader most of my life in the church since I was 12. I was the Deacon's Quorum President, the Teacher's Quorum President, then the Bishop's First Assistant in London. So, on my mission I have been learning how to be a follower. This is a skill, up until my mission, I have not learned. I was either in charge, or I was being a nuisance in the back with everyone else. Now I know how to follow. How be to be an example, and to lead by example.
Note, I tell people that the two things I want them to learn from me is to first know that I love and care for them, "People don't care how much you know until they know how much you care." And then second, that I'm a hard worker in all things.