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"By their fruits you will know them." :: Matt. 7:20 ::

Actions matter.

"I say to you, that every idle word that men shall speak, they will give account for in the day of judgement. For by your words you will be justified, and by your words you will be condemned."
:: Matt. 12:36-37 ::

So do your words.

"Not everyone that says to me, Lord, Lord, shall enter into the kingdom of heaven; but he that does the will of my father, which is in heaven." :: Matt. 7:21 ::

But above all, obedience to God comes first.