"And Elijah came to all the people, and said, “How long will you falter between two opinions? If the Lord is God, follow Him; but if Baal, follow him.” But the people answered him not a word." 1 Kings 18.21In general, the biggest problem Christians have is an undefined faith.
Despite professing a Christian faith, this is not possible in their everyday life because they are missing the power of the baptism of the Holy Spirit.
Only those who are sealed with the Holy Spirit are definite in their position before God, the world and the devil. They do not falter between two thoughts.