Jesus reveals Himself and His will. He reveals the history of the world through the Bible. He speaks this into your innermost mind. Only those who are rebellious and don’t want to follow Him will reject what He’s saying. Sometimes, they add to His words. Sometimes they negate His words. He will show them to be liars.

Add not unto his words, lest he reprove you, and you be found a liar. Proverbs 30:6

Revelational apologetics isn’t presuppositional, but revelational. It doesn’t depend on presuppositions or any other kind of suppositions. It depends on God. In all your ways acknowledge Him and He shall direct your paths. Suppositions come out to the human intellect, the human heart. God forbids a vision out of our own hearts. He has all the vision we need. Let Him impart it. Then, go out and tell people about it. Let it shine out from you as He does His works of love through you. Sometimes you can say more without words if that’s how God is leading.