I want you to understand a few things. The first is that there are some hearers that truly want to know the truth. They desire to be saved when hearing the Gospel because they are God's Holy children whom he has yet to call. Unfortunately we don't know who is and who is not God's children so we have to preach to everyone in hopes that they come to salvation. Many times we get discouraged and distraught because the devil's children want to argue and fight, ask for evidence that one cannot provide because God is unseen and unknowable to wicked men. All the evidence one needs is the Gospel of Salvation. The Bible says it is the power to save. It IS the power of God. So remember you preach the gospel let the chips fall where they may. If one does not get saved under the preaching of the gospel remember one of two things. They are the devil's children or you are the seed planter and God will call them through someone else. Never forget this because arguments about non-spiritual things become silly and it is a snare and trap by the enemy.
Rom 1:18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hinder the truth in unrighteousness;
Rom 1:19 because that which is known of God is manifest in them; for God manifested it unto them.
Rom 1:20 For the invisible things of him since the creation of the world are clearly seen, being perceived through the things that are made, even his everlasting power and divinity; that they may be without excuse:
Rom 1:21 because that, knowing God, they glorified him not as God, neither gave thanks; but became vain in their reasonings, and their senseless heart was darkened.
Rom 1:22 Professing themselves to be wise, they became fools,
Rom 1:23 and changed the glory of the incorruptible God for the likeness of an image of corruptible man, and of birds, and four-footed beasts, and creeping things.
Rom 1:24 Wherefore God gave them up in the lusts of their hearts unto uncleanness, that their bodies should be dishonored among themselves:
Rom 1:25 for that they exchanged the truth of God for a lie, and worshipped and served the creature rather than the Creator, who is blessed for ever. Amen.
Rom 1:26 For this cause God gave them up unto vile passions: for their women changed the natural use into that which is against nature:
Rom 1:27 and likewise also the men, leaving the natural use of the woman, burned in their lust one toward another, men with men working unseemliness, and receiving in themselves that recompense of their error which was due.
Rom 1:28 And even as they refused to have God in their knowledge, God gave them up unto a reprobate mind, to do those things which are not fitting;
Rom 1:29 being filled with all unrighteousness, wickedness, covetousness, maliciousness; full of envy, murder, strife, deceit, malignity; whisperers,
Rom 1:30 backbiters, hateful to God, insolent, haughty, boastful, inventors of evil things, disobedient to parents,
Rom 1:31 without understanding, covenant-breakers, without natural affection, unmerciful:
Rom 1:32 who, knowing the ordinance of God, that they that practise such things are worthy of death, not only do the same, but also consent with them that practise them.