以弗所書4:17-19

4:17 所以我說，且在主裡確實地說，你們行事不要再像外邦人存虛妄的心行事。

4:18 他們心地昏昧，與上帝所賜的生命隔絕了，都因自己無知，心裡剛硬；

4:19 良心既然喪盡，就放縱私慾，貪行種種的污穢。

So I tell you this, and insist on it in the Lord, that you must no longer live as the Gentiles do, in the futility of their thinking. They are darkened in their understanding and separated from the life of God because of the ignorance that is in them due to the hardening of their hearts. Having lost all sensitivity, they have given themselves over to sensuality so as to indulge in every kind of impurity, and they are full of greed.

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    這裡告訴我們: 未信主的人「心地昏昧與上帝所賜的生命隔絕了」。而他們之所以如此，是因為「自己無知、心裡剛硬」。這也提醒我們，必須努力追求認識真理，好讓我們明白上帝的恩典。

    因此，基督徒一生要努力追求認識真理，不可在這事上懶惰，虧欠上帝透過耶穌基督所賜的愛。