“May I beg you carefully to judge every preacher, not by his gifts, not by his elocutionary powers, not by his status in society, not by the respectability of his congregation, not by the prettiness of his church, but this — DOES HE PREACH THE WORD OF TRUTH, THE GOSPEL OF YOUR SALVATION? If he does, your sitting under his ministry may prove to you the means of begetting faith in you. But if he does not, you cannot expect God’s blessings.”
— C H Spurgeon
Acts 17:11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
1 John 4:1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
1 Thessalonians 5:21 Prove all things; hold fast that which is good.