Flesh and natural human reasoning would limit us to our own ability. We look to the circumstances, the problems, the tests and storms and say that we can't. The language of doubt, the flesh, and the senses is, "i can't. I haven't the abilty, the opportunity, or the strength. I'm limited." But eh language of faity say, "I can do all things through Christ which strengtheneth me." The strength of God is ours. We do not trust in our own strength, the Bible says nothing about our being strong in ourselves. It says that God is our strength.