I was recently struck by the irony in the way that several Bible characters were saved. Take the following as examples:
Noah was saved by water. It was the same water that wiped out his world (Gen 7v22-23).
Moses lead Israel through more waters; again, these same waters then drowned the Egyptians (Ex 14v21-28).
When David fought Goliath, the enemy was actually slain with his own weapon (1 Sam 17v50-51).
The whole nation of Israel was destroyed so that they could be delivered (Micah 4v10).
Christ died to overcome death (Heb 2v14).
I'm sure there are more; please let me know if you can think of some.
In all cases this repeated pattern engenders faith in the people who go through it. Each case provided an opportunity for the individual (or collective) to demonstrate that they had faith, despite either the odds being apparently stacked against them.
Whatsmore, it's the same mechanism of salvation that actually destroys the unfaithful. Death is either the route through which we are saved (see also: baptism, Rom 5v6) or permanently destroyed (Ecc 9v10).
There are many things in our lives that seem to be insurmountable difficulties. They aren't. If God can make death the thing that saves us, then surely any other difficulty, no matter how trying it may seem, cannot prevent the outworking of God's plan in our lives (Prov 16v9).
"For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things to come, nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord." - Rom 8 v38-39