Some philosophy can help establish the truth of Christianity. For example, here are some philosophical arguments for the existence of God:

The cosmological argument. Every effect must have an adequate cause. The universe is an effect. Reason demands that whatever caused the universe must be greater than the universe. That cause is God—who Himself is the uncaused First Cause (Hebrews 3:4).

The teleological argument. The universe displays an obvious purposeful design. This perfect design argues for a Designer, and that Designer is God (Psalm 19:1-4).

The moral argument. Every human being has an innate sense of “oughtness,” or moral obligation. Where did this sense of oughtness come from? It must come from God. The existence of a moral law in our hearts demands the existence of a moral Lawgiver (Romans 1:19-32).

The anthropological argument. Human beings have a personality (mind, emotions, and will). Since the personal cannot come from the impersonal, there must be a personal cause—and that personal cause is God (Genesis 1:26-27).

The ontological argument. Most human beings have an innate idea of a perfect being. Where did this idea come from? Not from man, for man is an imperfect being. Some perfect being must have planted the idea there. Thus God must in fact exist.

Pearl of Wisdom: Some people claim believing in God is unreasonable, but the truth is that not believing in Him is actually unreasonable.

[5·Minute APOLOGETICS for TODAY Ron Rhodes]