And we received God's spirit, so we know the wonderful things that God has fully given us. When we tell you this things. We do not use words that come from human wisdom. Instead, we speak words given to us by the Spirit, using the Spirit's words to explain spiritual truths. But people who aren't spiritual can't receive these truths from God's Spirit. It all sounds foolish to them and they can't understand it, for only those who are spiritual can understand what the Spirit means.
In understanding the Word of God, we should not use earthly wisdom to explain it, for it is foolish to do so. It is only through spiritual wisdom that we are able to interpret the truths of God. Thus, we must remain in our spirituality for us to be able to know the truths inscribed in God's scriptures and not be mislead by earthly wisdom.