Tim Challies writes,
The Bible teaches there is a clear relationship between spiritual discernment and spiritual maturity. For a Christian to be mature, he must also be discerning. Those who are not discerning must be immature, backsliding, or dead. Conversely, those who exhibit discernment must be alive, growing, and mature. It is clear from Scripture that all Christians are expected to pursue discernment, for the Bible cries out repeatedly for us to do so. It is the responsibility of each Christian to heed and to answer the call and so to guard the deposit God has entrusted to us.
read more about the discipline of spiritual discernment.