The Lord brings us through whatever we need in order to find our security in Him.
It is too easy to rely on the things we can do, or the things we know. When we stand before Him and tell Him He can do anything with our lives, our bodies and our faculties, He lovingly moves to prepare us for Heaven.
There is no limit to His training - that is, when the training is welcome.
Soldier of The Cross, step away from predictable security and learn to lean on Him .