Psalms 61:2-4 "From the end of the earth will I cry unto thee, when my heart is overwhelmed: lead me to the rock that is higher than I. (3) For thou hast been a shelter for me, and a strong tower from the enemy. (4) I will abide in thy tabernacle forever: I will trust in the covert of thy wings. Selah."
When Peter stepped out on faith into the middle of the Sea of Galilee during a raging storm, he quickly began to feel his own inadequacies as a person in control of what he was doing. I believe every Christian comes to a point some time, if they've been obedient, when they realize they are in over their head, out of their depth, in the middle of a raging storm. In other words, without outside intervention-powerful intervention `-the situation is hopeless.
While God promises to provide a way of escape so that our temptation to sin in trials will not be greater than we can bear, He doesn't say that we won't face situations that are greater than we are, greater than our strength can handle. Instead of relying on our own strength though, He wants us to rest in Him, and bear us up over those mighty waves in the power and control of Christ, so that when we are on the other side of the trial, we can say, "Wow! See what God has done!"
Jesus did not have to carry Peter back to the boat. Peter, in his moment of weakness (Don't we all have 'em?) knew exactly what to do, and he cried, "Lord, help!" Jesus was right there, just as He always is when we start to sink in our temptation or trial. Peter got to walk with Jesus on the water back to the ship. What an experience that must have been!
Sometimes when I am tempted, I do get scared because I see my own personal strength is no match for my situation. Isn't that silly? I could never do it on my own in the first place! And even if I could find some success in my own power, I would steal all the glory for it. It's so much better when Jesus can do it through me, and when He can be glorified at the end of it!