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I have two sentences below with underlined parts. When I see those kinds of sentences, I have this strong inclination to put the definite article "the" in front of them to limit or specify those general terms. I am sure those temptations are wrong to befallen to. Help me to curve this inclination with your enlightening explanation. Sorry if I am not being clear.

We dealt with threats.

Jesus walked to His disciples who were beset by fierce waves.
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As the sentences stand, you cannot use the definite article, since there is nothing definite-- neither specific nor previously mentioned-- about threats or waves. It is as simple as that.
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I am sure those temptations are wrong to befallen to. Help me to curve this inclination ..

You need this:

I am sure I should not give in to those temptations. Help me to curb this inclination ...

CJ