As the unbelievers came to Jesus to tempt him, he identified their cause of error being in that they did not know the scriptures and failed to recognize the power of God. For these people, they failed to understand marriage and also how the scriptures support that God resurrects people from the dead. Had they known truth and believed in their hearts, they would not have walked in error.
Life is not any different today. Identifying truth for life’s situations and recognizing the power of God will keep you from being led astray. In order for this to happen, You must know truth that is pertinent to your life and then by faith walk believing that God will bless it and provide his powerful guidance and blessing. If You fail to seek truth for your life, You will rely upon the reasoning of your heart and that reasoning will lead you to error. There is a way which seemeth right unto a man, but the end thereof are the ways of death. (Prov. 14:12)
God reminds us that the word of God is a lamp to our feet and a light for our path. (Psalm 119:105). He will guide us to truth that will provide the direction we must go. He will not illuminate the entire way, but he will show the next step. Our part then is to believe and follow.
But if from thence thou shalt seek the Lord thy God, thou shalt find him, if thou seek him with all thy heart and with all thy soul. Edit. 4:29