Before Jesus Christ established the Catholic Church, most followed their own delusions and worshipped created false "gods". These "gods" were, in essence, created and subject to change (both spiritually and physically). In a similar way, atheism and “secular humanism” are based on subjective reasoning and have an unstable foundation which is subject to change (sensory data). With the one triune God, however, he is uncreated, not subject to change, and upholds all that exists within the universe.
Malachi 3
>For I am the Lord, and I change not: and you the sons of Jacob are not consumed.Hebrews 13
>Jesus Christ, yesterday, and to day; and the same for ever.James 1
>Every best gift, and every perfect gift, is from above, coming down from the Father of lights, with whom there is no change, nor shadow of alteration.In philosophy, actualization refers to the process by which the state of one thing goes to another state.
In nature we can see how external laws or factors are responsible for the actualizing of transformations. For example, a chestnut seed cannot grow into a chestnut tree by itself but requires this actualization by nature. To give another example, a ball that rolls from Point A to Point B cannot sustain its motions just by the ball, surface, or even the initial movement themself, but require multiple forces for maintenance. Similarly even if one were to posit that the universe was eternal and that all of its laws are as well, there is still the problem of how the exercising of the laws in the universe even occurred and how they were sustained. For the example of the chestnuts, the force would be, in a way, nature, and the answer for both nature and the exercising of the laws of the universe would, ultimately, be that of God
Polytheism and atheism cannot offer this, but Catholicism can. It is for this reason, along with others, that many nations converted and baptized themselves into the Catholic Church
https://www.youtube.com/watch?v=UvU8MGzmsLI 
